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Montolit FAJ10 3/8" Diamond Drill Bit

Montolit FAJ10 3/8" Diamond Drill Bit

by Montolit
SKU FAJ10
$35.89 - $35.89
$35.89
$35.89 - $35.89
$35.89

Clean, fast holes in the hardest tile. The Montolit FAJ10 3/8" Diamond Drill Bit drills a 3/8" hole through dense porcelain, natural stone, and glass with a vacuum-brazed diamond crown that bites hard and leaves crisp edges — far less chipping and cracking than cheap bits. Run it wet or dry, on a drill or a grinder.

More Details

A vacuum-brazed diamond drill bit for clean 3/8" holes in porcelain, stone, and glass.

  • Hole size: 3/8"
  • Diamond crown: Vacuum-brazed for aggressive cutting and clean hole edges
  • Materials: Dense porcelain, natural stone, glass, and other hard tile
  • Wet or dry: Works either way — adapts to any jobsite setup
  • Best for: Larger anchors, fixtures, and penetrations in dense porcelain and stone
  • Build: Balanced body runs with minimal vibration for accurate starts and straight holes
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Montolit FAJ10 3/8" Diamond Drill Bit — Bigger Anchors, Same Clean Edge

Step up to 3/8" and the stakes rise with the diameter — more material to remove, more heat, more chance to chip out a visible face. The Montolit FAJ10 handles it with a vacuum-brazed diamond crown that bites aggressively through dense porcelain, natural stone, and glass while still leaving a clean edge, so larger fixtures and penetrations go in without cracking the tile around them.

Run it wet or dry, on a drill or an angle grinder, with a balanced body that starts accurately and holds a straight line. Dry-drilling gets easier and safer with a dip of M-PERFORMER cooling gel, and the Diamond Countersink cleans up the finished hole to keep hardware from stressing the edge.

Why Tile Pros Choose It

  • Clean larger holes: Vacuum-brazed 3/8" crown cuts aggressively and finishes crisp
  • Hard materials: Dense porcelain, natural stone, and glass
  • Wet or dry: Drill or grinder, your call
  • Straight and accurate: Balanced body resists wander under a bigger cut
  • Best for: Larger anchors, fixtures, and penetrations in dense porcelain and stone
  • Bigger hole, same steady nerves: The crown does the worrying for you

Pro tip: Let the diameter work at its own pace — more material means more heat, so keep it cool and don't lean on it. Back off as you approach the exit face to protect the edge.