IRWIN 10502803 Selfcut BLUE GROOVE 4X 6x157mm Wooden Flat Bits - Product Features
- IRWIN Blue Groove 4X Flat Bit with patented Blue-Groove point and cutting edge designed to cut not scrape the timber for 4X faster chip removal
- Double cutting spurs scribe outside of the hole, reducing breakout
- Relief angle has been increased from 12 degree to 17 degree
- Parabolic scoop optimizes control and removal of wood chips
- Thicker cutting edge for longer drilling life with 10% larger shank for added durability
- 1/4\" Hex shank prevents bit slipping in the drill