The IRWIN® Blue Groove 4X Flat Bits have a patented groove point and cutting edge, designed to cut and not scrape the timber. They are 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 152mm in length and 10% larger in diameter for added durability.
This IRWIN® Blue Groove 4X Flat Bit Set is supplied in a hard, proset case. Contains the following:
Sizes (Ø): 12, 16, 18, 20, 22, 25, 28 and 32mm

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