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BIHUI Diamond Countersink Bits

BIHUI Diamond Countersink Bits

by BIHUI
SKU DMC238A

$42.65 - $57.67
$42.65
$42.65 - $57.67
$42.65
Size: 2mm - 38mm

Sit hardware flush, not proud. BIHUI Diamond Countersink Bits taper and enlarge pre-drilled holes in dense porcelain, ceramic, and stone so anchors, screws, and mounting hardware seat flush with or below the surface — with clean, controlled cutting that minimizes chip-out. Available in multiple diameters for the right fit.

More Details

Diamond countersink bits for recessing hardware in tile and stone, in multiple diameters.

  • Use: Countersink and taper pre-drilled holes so hardware sits flush or recessed
  • Materials: Porcelain, ceramic, and natural stone
  • Sizes: Multiple diameter choices to match fixtures and anchors
  • Operation: Works with standard power tools, wet or dry
  • Finish: Diamond surfaces cut cleanly and reduce chip-out and surface damage
Shipping & Return Policies

Shipping Policy

Refund & Return Policy

BIHUI Diamond Countersink Bits — Sit Hardware Flush in Tile and Stone

A bolt head or anchor standing proud of a finished tile face looks unfinished and gets in the way. BIHUI diamond countersink bits taper and recess a pre-drilled hole so hardware sits flush or recessed in porcelain, ceramic, and natural stone — the clean detail that separates pro work from a rushed install.

They come in multiple diameters to match your fixtures and anchors, run wet or dry with standard power tools, and the diamond surfaces cut cleanly to leave a smooth, chip-free recess. For a full range of shaping bits, see the Diamond Milling Bit Set.

Why Tile Pros Choose It

  • Flush hardware: Recesses fasteners and anchors below the tile face
  • Clean cut: Diamond surfaces taper holes without chipping
  • Size to the fixture: Multiple diameters to match your hardware
  • For tile and stone: Porcelain, ceramic, and natural stone
  • Wet or dry: Works with standard power tools

Pro tip: Drill the pilot hole first, then countersink with light pressure and water to keep the edge clean — forcing the taper is what chips the rim. Match the countersink diameter to the hardware so it seats without slop.