The Irwin 4X Blue Groove Flat Bits have a patented groove point and cutting edge designed to cut and not scrape the timber 4 times faster than standard flat bits. The parabolic scoop optimises control and removal of wood chips. Increased relief angle from 12° to 17°. The shank is 157mm in length and 10% larger in diameter for added durability.
Sizes: 6, 8, 10, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 28, 32, 35 & 38mm.