3-Wing Drills Hinge Boring Bits roughing spiral with 1/2" cutting

roughing spiral with 1/2" cutting diameter

Similar to chamfer bits

round bottom veining bit with 3/16" cutting diameter

you damage the threads or your shank has been marred by a bad collet

allowing the down shear cutting action to the top surface during shallow cuts

3-Wing Drills Hinge Boring Bits roughing spiral with 1/2" cuttingBores clean accurate holes in wood, plastic laminates, Formica, and Masonite. Carbide tipped for long life even in abrasive materials. The outside spurs outline the hole and help prevent fraying, chipping, and blowout. The replaceable 1 8 diameter high speed steel center point starts the hole and prevents the bit from walking. Replace the center point with a 1 8 drill bit if desired. Can be re sharpened or re tipped. Sizes 2" and larger have a 1 2"