Lockhead Drill Press Adjustable Wood Bit, Cuts: 7/8"-3", 11/32" Shank Size, 5-1/2" Overall Length, Wedge Type Blade Lock & Slow Feed Screw Point, Special Precision Ground Shank Has 3 Equally Spaced Flats For Use In Drill Presses Having 3 Jaw Chucks, Pouched.