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BIHUI 20mm Diamond Milling Bit

BIHUI 20mm Diamond Milling Bit

by BIHUI
SKU DMB20A
$28.95 - $28.95
$28.95
$28.95 - $28.95
$28.95

Size up penetrations cleanly. The BIHUI 20mm Diamond Milling Bit enlarges and refines drilled holes in porcelain and stone for valve openings, pipe penetrations, and larger fixtures — its diamond bond removes material smoothly while keeping high-finish surfaces chip-free. Runs wet or dry on standard tools.

More Details

A 20 mm diamond milling bit for refining and enlarging drilled holes in tile and stone.

  • Diameter: 20 mm
  • Use: Adjust and refine drilled holes for valve openings, pipe penetrations, and larger fixtures
  • Materials: Porcelain, ceramic, and natural stone
  • Operation: Wet or dry; compatible with standard grinder or drill threads
  • Finish: Smooth milling action minimizes chipping on high-finish surfaces
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BIHUI 20mm Diamond Milling Bit — Refine and Enlarge Holes Without Chipping

Drilling the hole is only half the job — getting it to the exact size and shape a fixture needs is where a milling bit earns its keep. The BIHUI 20mm diamond milling bit refines and enlarges drilled holes in porcelain, ceramic, and natural stone, so you can valve openings, pipe penetrations, and larger fixtures cleanly. The diamond bond removes material smoothly, reducing the chipping and edge blowout that ruin a visible penetration.

It runs wet or dry and works with standard tools, so it drops into the setup you already have. When you need a range of profiles for shaping and correcting cuts, step up to the Diamond Milling Bit Set.

Why Tile Pros Choose It

  • Refines holes: Enlarge and fine-tune drilled openings to exact size
  • Clean results: Diamond bond minimizes chipping and edge blowout
  • For tile and stone: Porcelain, ceramic, and natural stone
  • Wet or dry: Works with standard tools either way
  • Right-sized: 20mm for valve openings, pipe penetrations, and larger fixtures

Pro tip: Keep the bit moving and use water to cool it on dense porcelain — heat is what burns a diamond bit and glazes the tile. Ease into the cut rather than forcing it, and let the diamond do the work.