IRWIN 8-PC Marples Forstner Bit Set

IRWIN Marples Forstner bits drill clean and precise flat-bottomed holes and pocket holes quickly and easily. Cutting angles maximize speed of cut. Reduced shank fits 3/8-in and larger drills and drill presses. Includes: 1/4-in (6.3mm), 3/8-in (9.5mm), 1/2-in (12.7mm), 5/8-in (15.8mm), 3/4-in (19.0mm), 7/8-in (22.2mm), 1-in (25.4mm), 1-3/8-in (34.9mm).