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BIHUI Diamond Countersink Bits

BIHUI Diamond Countersink Bits

by BIHUI
SKU DMC238A

$39.29 - $45.49
$39.29
$39.29 - $45.49
$39.29
Size: 2mm - 38mm

The BIHUI Tools Diamond Countersink Bits are engineered for precision finish work—giving tile and stone professionals the ability to create smooth, clean recessed holes for fixtures, anchors, and accessory mounts. With aggressive diamond cutting and a tapered bodied profile, these bits deliver professional accuracy on porcelain, ceramic, and natural stone.

More Details
More Details
  • Diamond cutting surfaces optimized for hard materials like porcelain and natural stone
  • Ideal for creating countersunk holes or finishing drilled openings, allowing screws or anchors to sit flush or below the surface
  • Available in multiple diameters to match common fixture and mounting sizes
  • Compatible with standard angle grinders or drills using the correct arbor or adapter
  • Suitable for both wet and dry applications depending on jobsite conditions
  • Helps reduce risk of chipping, cracking or surface damage during finish-drilling operations
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Shipping Policy

Refund & Return Policy

Bihui Tools Diamond Countersink Bits - Precision Countersinking for Clean Fixture Installations

When installing tile or stone, creating a properly recessed or countersunk hole for anchors, flush mounts, or hardware can be a challenge — especially on dense porcelain or polished surfaces. The BIHUI Tools Diamond Countersink Bits provide the professional solution: aggressive diamond cutting surfaces combined with a compatible design that makes detailed work more reliable, faster, and cleaner.

Use these bits to take an existing drilled hole and enlarge or taper it to accept fixture hardware flush with or below the tile surface. The diamond bond ensures consistent performance even on harder materials, while the design helps protect tile edges and finished surfaces from damage. Whether you’re prepping for toilets, heavy mirror mounts, structural anchors or designer feature pieces, these countersink bits give you the control and precision pros expect.

Why Tile Pros Trust It

  • Professional cut quality: Diamond surfaces cut hard materials cleanly, minimizing chip-out and wear.

  • Finish-fit capability: Countersunk holes allow hardware to sit flush, improving aesthetics and function.

  • Versatile diameter choices: Match fixture or anchor sizes easily for optimal fit.

  • Flexible integration: Works with standard power tools and in both wet or dry environments.

  • Surface-safe performance: Reduces risk of damage during high-precision mounting operations.