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 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

• 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

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

California residents: see Prop 65 Warning.

Professional tile contractors: contact us for volume pricing.