Top Diamond Glass Hole Saw Set in Kenya 2026

A diamond glass hole saw set in Kenya is designed for drilling clean round holes in glass, ceramic tiles, porcelain, marble, granite and other compatible hard surfaces. It uses a diamond-coated cutting edge instead of the teeth found on ordinary wood or metal hole saws.

For most plumbers, tilers, glass installers and technicians, a 15-piece diamond hole saw set covering about 6mm to 50mm gives a useful range of sizes. Current Kenyan prices for diamond glass hole saw sets start at about KSh 1,750 for a 12-piece set, while a 15-piece set is currently around KSh 2,800 to KSh 4,200 depending on the seller and quality.

Diamond Glass Hole Saw Set in Kenya Summary

Set	Sizes/Range	Main Materials	Approx. 2026 Price
12-Piece Diamond Set	4–50mm	Glass, tile, porcelain	KSh 1,750
12-Piece Diamond Set	6–35mm	Glass, ceramic, marble	KSh 2,100
15-Piece Diamond Set	6–50mm	Glass, tile, marble, granite	KSh 2,800
Breskol 15-Piece Set	Multiple sizes	Glass, ceramic, granite	KSh 3,499
15-Piece Diamond Set	Multiple sizes	Glass, marble, ceramic, tile	KSh 4,200
8-Piece Guided Diamond Set	6–45mm	Tile, glass, marble, granite	About KSh 4,498

Current Kenyan listings show that complete sets are usually better value for installers who need several hole diameters rather than one individual cutter.

1. 15-Piece 6–50mm Diamond Glass Hole Saw Set

The 15-piece 6–50mm diamond glass hole saw set is our top all-round choice for users who need several drilling sizes.

A current Kenya listing gives the following 15 sizes:

6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 26, 28, 30, 40 and 50mm.

15-Piece Diamond Hole Saw Specifications

Feature	Specification
Product	Diamond Glass Hole Saw Set
Pieces	15
Minimum Diameter	6mm
Maximum Diameter	50mm
Cutter Type	Hollow core
Cutting Edge	Diamond coated
Body	Steel/carbon steel on common sets
Common Coating	Electroplated diamond
Drilling Method	Wet drilling recommended
Cooling	Clean water
Drill Type	Standard rotary drill
Glass	Yes
Ceramic Tile	Yes
Porcelain	Yes
Marble	Yes
Granite	Compatible light drilling
Hammer Mode	No

This set provides small cutters for mounting holes and larger 40mm and 50mm cutters for plumbing, fittings and installation work.

Price in Kenya

A current listing from Peter Machines and Spares prices its 15-piece set at KSh 2,800, reduced from KSh 4,800.

Another Nairobi listing is around KSh 3,499, while a current 15-piece Kilimall listing is KSh 4,200.

2. Breskol 15-Piece Diamond Glass Hole Saw Set

Another option is the Breskol 15-piece set currently listed in Nairobi.

The seller describes it as suitable for:

• Glass
• Marble
• Tiles
• Granite
• Ceramic
• Fibreglass
• Porcelain
• Slate
• Light stone

The current price is approximately KSh 3,499.

Best For

This set is suitable for:

• Plumbers
• Tilers
• Glass installers
• Renovation contractors
• Kitchen installers
• Bathroom installers
• DIY users

3. 15-Piece Diamond Hole Saw Set at KSh 4,200

A current Kenyan 15-piece diamond hole saw set is also available at approximately KSh 4,200.

It is specifically listed for drilling:

• Glass
• Marble
• Ceramic
• Tiles

The product is locally dispatched from Nairobi Central.

This is another option for buyers who want a complete set rather than purchasing separate diamond cutters.

4. 12-Piece 6–35mm Diamond Hole Saw Set

If you do not need a 50mm cutter, a 12-piece set can cost less.

A current Nairobi listing includes:

6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 30 and 35mm.

Specifications

Feature	Specification
Pieces	12
Minimum Size	6mm
Maximum Size	35mm
Body	Carbon steel
Surface	Nickel plated
Cutting Edge	Diamond coated
Recommended Speed	800–1,000 RPM on this listing
Cooling	Water
Current Price	KSh 2,100

The seller recommends continuous water cooling and a speed around 800 to 1,000 RPM for this particular set.

Best For

• Small plumbing holes
• Glass projects
• Ceramic tiles
• Marble
• Porcelain
• DIY work

5. 12-Piece 4–50mm Diamond Hole Saw Set

Another affordable choice is a 12-piece set currently listed at KSh 1,750.

It covers sizes between approximately 4mm and 50mm and uses a carbon-steel body with nickel coating and a diamond-coated cutting surface.

The cutters have clearance holes that help water enter the cutting area and allow debris to escape.

Best For

• Glass
• Ceramic
• Porcelain
• Tile
• Brick and compatible stone as specified by the seller

Water lubrication is recommended to improve drilling and extend cutter life.

6. 8-Piece 6–45mm Diamond Hole Saw Set With Guide

Some users have difficulty starting a diamond hole saw because many glass hole saws do not have a centre pilot drill.

A guided set can make positioning easier.

A current Kenyan listing offers an 8-piece 6–45mm diamond-coated drill bit set with a positioning guide for approximately KSh 4,498.

Best For

• Beginners
• Tile installers
• Bathroom installation
• Glass drilling
• Marble
• Granite
• Porcelain

The guide can help prevent the cutter from sliding across a smooth tile or glass surface when starting.

Diamond Glass Hole Saw Set Prices in Kenya 2026

Type	Approximate Price
Individual Small Diamond Hole Saw	KSh 333–1,000+
Basic Diamond Glass Hole Saw Set	KSh 1,199–2,000
12-Piece 4–50mm Set	KSh 1,750
12-Piece 6–35mm Set	KSh 2,100
15-Piece 6–50mm Set	KSh 2,800
Breskol 15-Piece Set	KSh 3,499
15-Piece Set, Other Seller	KSh 4,200
8-Piece Guided Set	About KSh 4,498

Individual cutters can also be purchased separately. Current Kenyan listings include 6mm cutters from around KSh 333 to KSh 575, while larger 40mm to 60mm cutters generally cost more.

For users who need many different sizes, a complete diamond glass hole saw set in Kenya can provide better value.

What Is a Diamond Glass Hole Saw?

A diamond glass hole saw is a hollow cylindrical cutter with diamond abrasive material attached to its cutting rim.

Instead of using sharp teeth, the diamond particles grind through the hard surface.

This makes the cutter useful for brittle materials that ordinary wood hole saws are not designed to drill.

Materials You Can Drill

Depending on the exact cutter, a diamond glass hole saw can be used on:

• Glass
• Ceramic
• Porcelain
• Marble
• Granite
• Slate
• Tiles
• Fibreglass
• Light stone

Current Kenyan 12-piece and 15-piece sets list many of these materials as suitable applications.

Always check the specifications for the exact cutter before drilling.

Best Diamond Hole Saw for Glass

For glass, choose an electroplated diamond-coated cutter designed specifically for glass and tile.

The 15-piece 6–50mm set provides a wide selection of diameters.

Its common sizes include:

• 6mm
• 8mm
• 10mm
• 12mm
• 14mm
• 16mm
• 18mm
• 20mm
• 22mm
• 25mm
• 26mm
• 28mm
• 30mm
• 40mm
• 50mm

This gives glass workers flexibility for different fittings and projects.

Best Diamond Hole Saw for Ceramic Tiles

Diamond hole saws are useful when installing:

• Taps
• Shower fittings
• Pipes
• Electrical fittings
• Bathroom accessories
• Kitchen accessories

A diamond cutter grinds through the tile rather than relying on the cutting teeth used on wood hole saws.

Use normal rotary drilling.

Do not use hammer mode on brittle ceramic tiles.

Best Diamond Hole Saw for Porcelain

Porcelain can be harder to drill than standard ceramic tile.

Use:

• A quality diamond cutter
• Controlled drill speed
• Water cooling
• Light pressure
• Correct starting technique

Do not force the cutter.

Excessive pressure creates heat and can shorten the life of the diamond coating.

Best Diamond Hole Saw for Marble

Diamond hole saws can also be used for marble where the cutter manufacturer lists marble as a supported material.

Current Kenyan 12-piece and 15-piece sets specifically list marble among their applications.

Water helps control heat and remove grinding debris.

Can a Diamond Glass Hole Saw Drill Granite?

Selected diamond-coated sets list granite as a compatible material.

However, granite is hard and abrasive.

For frequent professional granite drilling, a higher-grade diamond core bit designed specifically for granite may provide better performance and service life than a low-cost electroplated glass set.

Can It Drill Concrete?

Do not assume a glass and tile hole saw is suitable for structural concrete.

The current 12-piece 6–35mm listing specifically states that its set is not for concrete.

Concrete drilling can require a different type of diamond core bit and suitable drilling machine.

12-Piece vs 15-Piece Diamond Hole Saw Set

Feature	12-Piece Set	15-Piece Set
Number of Cutters	12	15
Common Minimum Size	4–6mm	6mm
Common Maximum	35–50mm	50mm
Size Selection	Good	Wider
DIY Work	Excellent	Excellent
Professional Installation	Good	Better
Price	Lower	Slightly higher

For regular professional work, the 15-piece set provides more size choices.

For occasional drilling, a 12-piece set may be enough.

Why Diamond Hole Saws Need Water

Water is very important when using many electroplated diamond glass hole saws.

It helps:

• Cool the diamond edge
• Reduce overheating
• Remove drilling debris
• Improve cutting action
• Extend cutter life

Current product instructions repeatedly recommend adding water during drilling.

Never allow an electroplated wet-drilling cutter to overheat.

Can You Use a Cordless Drill?

Yes.

Most common diamond glass hole saws can be used with a compatible standard cordless or corded drill.

A cordless drill is particularly convenient for:

• Bathroom installation
• Kitchen installation
• Glass work
• Plumbing
• On-site tile work

Check that the drill chuck accepts the hole saw’s shank.

Do You Use Hammer Mode?

No.

For glass, ceramic, porcelain and similar brittle materials, use normal rotary mode.

Hammer action can crack or break the material.

Turn hammer mode off before drilling.

Why Is There No Centre Drill?

Many diamond glass hole saws are hollow cutters without a centre pilot drill.

This allows the diamond rim to grind the hole.

The disadvantage is that the cutter can slide when first placed on smooth glass or tile.

There are two common ways to deal with this:

1. Use a positioning guide.
2. Start the cutter at a slight angle.

Once a shallow groove forms, gradually bring the drill upright.

How to Use a Diamond Glass Hole Saw

Step 1: Choose the Correct Size

Select the hole saw diameter required for the fitting.

Step 2: Mark the Hole

Clearly mark the centre of the required opening.

Step 3: Secure the Material

The workpiece should not move while drilling.

Step 4: Turn Off Hammer Mode

Use rotary drilling only.

Step 5: Add Water

Keep the cutting area wet.

Step 6: Start at an Angle

If you do not have a guide, gently place one edge of the cutter against the surface.

Start slowly.

Step 7: Form a Small Groove

Allow the diamond rim to establish a cutting path.

Step 8: Bring the Drill Upright

Gradually straighten the drill once the groove prevents the cutter from sliding.

Step 9: Use Light Pressure

Allow the diamond abrasive to do the work.

Do not force it.

Step 10: Keep Adding Water

Maintain cooling throughout the cut.

What Drill Speed Should You Use?

The correct speed depends on:

• Cutter diameter
• Material
• Cutter design
• Manufacturer instructions

One current 12-piece set recommends around 800 to 1,000 RPM.

Larger cutters normally require more controlled speed than small cutters.

Always follow the instructions supplied with your exact hole saw.

How to Get a Clean Hole

To improve hole quality:

• Mark accurately.
• Secure the workpiece.
• Keep the cutter cool.
• Use light pressure.
• Keep the drill steady.
• Avoid hammer mode.
• Do not force the cutter.
• Slow down as you approach breakthrough.

When possible, supporting the material from underneath can also reduce movement.

How Long Does a Diamond Hole Saw Last?

There is no single number of holes that every cutter will drill.

Service life depends on:

• Diamond coating quality
• Material hardness
• Material thickness
• Drill speed
• Cooling
• Pressure
• Cutter diameter
• Operator technique

Heat is one of the biggest enemies of low-cost electroplated diamond hole saws.

Using water and light pressure can help extend their useful life.

How to Choose a Diamond Glass Hole Saw Set in Kenya

Check the Number of Sizes

A larger set gives you more options.

For professional installation, 12 to 15 pieces can be useful.

Check the Diameter Range

A 6–50mm set covers many common small and medium installation holes.

Check the Diamond Coating

The cutting rim should have an even diamond coating.

Check the Body Material

Many affordable sets use carbon steel with nickel plating.

Check Drill Compatibility

Confirm the shank will fit your drill chuck.

Check the Material Rating

Do not assume every diamond cutter works on every hard material.

Check whether it is rated for:

• Glass
• Ceramic
• Porcelain
• Marble
• Granite

Consider a Drilling Guide

A guide is useful for beginners because it reduces movement when starting on smooth tile or glass.

Diamond Hole Saw vs Ordinary Hole Saw

Feature	Diamond Hole Saw	Ordinary Hole Saw
Cutting Edge	Diamond abrasive	Teeth
Glass	Yes, compatible models	No
Ceramic	Yes	Usually unsuitable
Porcelain	Yes, suitable models	Usually unsuitable
Marble	Yes	Usually unsuitable
Wood	Not the main purpose	Excellent
Metal	Specialized bit required	Bi-metal/TCT preferred
Water Cooling	Commonly recommended	Usually not for wood

Do not use a wood hole saw simply because it has the same diameter.

The cutting systems are different.

Diamond Hole Saw vs TCT Hole Saw

TCT means tungsten carbide tipped.

TCT hole saws are commonly used for materials such as:

• Metal
• Stainless steel
• Aluminium
• Fibreglass
• Selected construction materials

Current Kenyan 10-piece TCT hole saw sets cost around KSh 7,491 to KSh 7,498.

For glass and ceramic, use a cutter specifically designed and rated for those materials.

Common Mistakes When Drilling Glass and Tiles

Using Hammer Mode

Hammering can crack glass and tiles.

Use rotary mode.

Drilling Without Water

This can cause excessive heat and shorten cutter life.

Using Too Much Pressure

Diamond cutters work by grinding.

Heavy force does not necessarily make them cut faster.

Starting Too Fast

A fast start can cause the cutter to slide across the surface.

Using the Wrong Hole Saw

Wood, metal and diamond hole saws are designed for different materials.

Allowing the Cutter to Overheat

Stop and cool the cutter when necessary.

Benefits of a Diamond Glass Hole Saw Set

A diamond glass hole saw set in Kenya provides:

• Multiple sizes in one kit
• Clean circular drilling
• Diamond-coated cutting edges
• Glass drilling capability
• Ceramic tile drilling
• Porcelain drilling
• Marble drilling
• Compatibility with standard drills
• Affordable replacement cost
• Useful sizes for plumbing
• Good value for installers
• Easy portability

Who Should Buy a Diamond Glass Hole Saw Set?

This set is useful for:

• Plumbers
• Tilers
• Glass installers
• Bathroom installers
• Kitchen installers
• Interior contractors
• Electricians
• Furniture makers
• Renovation contractors
• DIY users

It is especially useful where fittings need to pass through glass, tiles or stone surfaces.

Which Diamond Glass Hole Saw Set Should You Buy?

For most professional installers, the 15-piece 6–50mm diamond glass hole saw set offers the most useful combination of sizes.

The current 15-piece set sold by Peter Machines and Spares contains 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 26, 28, 30, 40 and 50mm cutters and is currently priced at KSh 2,800.

For a smaller budget, a current 12-piece 4–50mm set costs around KSh 1,750, while a 12-piece 6–35mm set is around KSh 2,100.

For beginners who have difficulty keeping the cutter in position, consider a set supplied with a positioning guide.

Final Recommendation

For buyers searching for the top diamond glass hole saw set in Kenya 2026, a 15-piece set covering approximately 6mm to 50mm is a practical all-round choice.

It provides enough sizes for small mounting holes, plumbing installations, bathroom fittings, kitchen projects, glass work and tile installation.

The 15-piece set currently listed by Peter Machines and Spares costs KSh 2,800 and provides 15 cutters from 6mm to 50mm.

For best results, use the correct cutter for the material, switch off hammer mode, use clean water for cooling, start slowly and apply light pressure.