Product Description
IRWIN Blue Groove 4X Flat Bit 18mm x 400mm with patented Bluegroove 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 fom 12° to 17°. Parabolic scoop optimises 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.