Diamond Core Drill Bit for Porcelain & Granite (300+ Holes)

Long-Life Diamond Core Drill Bit for Porcelain Tile & Granite

The DISTAR Rocket Diamond Drill Bit is a professional diamond core drill for porcelain tile and granite, engineered for long life, clean cuts, and high-efficiency drilling.

With the ability to deliver 300+ holes in 10mm porcelain, this diamond core drill bit significantly outperforms standard diamond hole saws — making it ideal for high-volume professional work.

Key Features

• Sintered diamond segments — bonded for maximum durability and consistent cutting
• Laser-welded construction — reinforced steel body handles hard material stress
• Dry drilling capable — no water setup required; pair with Distar CoolGEL 250 for extended bit life
• Available 3/4"–3" — covers every common hole size from pipe penetrations to large fixture cutouts
• Max 3,000 RPM — pairs perfectly with the Proxxon IBS/A variable speed rotary tool

Available Sizes for Every Application

• 3/4" (20mm) — small pipe penetrations, cable conduit
• 1 3/8" (35mm) — standard plumbing supply lines, shower valve stems
• 1 3/4" (45mm) — faucet body holes, larger pipe penetrations
• 2" (50mm) — medium fixture bases, drain rough-ins
• 2 1/4" (57mm) — larger drain cutouts, fixture bases
• 2 1/2" (63mm) — shower drain cutouts
• 2 3/4" (68mm) — large fixture bases, floor drain openings

Product Specifications

Improve Dust Control While Drilling

For cleaner results, pair this drill with the DrillDUSTER 82 dust collector to reduce airborne dust, improve visibility, and extend tool life.

Frequently Asked Questions

How many holes can this drill bit make?

It can deliver 300+ holes in 10mm porcelain under proper use.

Can it be used without water?

Yes, it is designed for dry drilling applications. Use CoolGEL 250 for extended bit life on dense materials.

What materials can it drill?

Porcelain tile, granite, and other ultra-hard materials.

Will it chip tile?

No — when used correctly it produces clean, chip-free holes.

Works Well With

• CoolGEL 250 Drilling Gel — cooling gel that extends bit life during dry drilling on dense porcelain and granite
• DrillDUSTER 82 — dust collector for clean, visible drilling; attaches directly to the drill
• SocketDUSTER 68–82 — dust collection for larger outlet-size holes (68–82mm)
• HomeDUSTER 40 — compact dust collector for smaller drill sizes in finished spaces
• TileTEMPLATE — mark hole positions precisely before drilling
• TileTEMPLATE XL — for marking large-format tile before core drilling

Further Reading

• Dry drilling construction materials: Q&A for contractors
• How to drill porcelain tile without cracking
• How to drill clean holes in porcelain tile without cracking it — Proxxon IBS/A + Distar Rocket
• What is the best way to cut porcelain tile?

California residents: see Prop 65 Warning.

Professional tile contractors: contact us for volume pricing.