Bihui Tools Diamond Countersink Bits
Diamond countersink bits are designed to enlarge, bevel and ease stress in rough drilled tile holes.
- Reduces the risk of stress related cracking where large format tiles are subjected to tension.
- Clean up finished edges of exposed tile around floor drains or other protrusions.
- 5/8"-11 threaded arbor
- Medium grit
- May be used wet or dry