NEW 16PC FORSTNER WOOD BORING AUGER DRILL BIT HOLE SAW SET PLASTIC CASE SPECIFICATIONS Hardened and tempered, carbon steel construction. Precision machined cutting tips. 3/8" reduced shanks fits nearly all drills. Max speed: 5000RPM. Bit is guided by own edge to bore straight, smooth holes in wood. Designed to make professional, flat bottom holes, pocket holes, and clean-thru holes. Great for home or business woodworking! Storage is case included. Sizes: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8", 1-1/2", 1-5/8", 1-3/4", 1-7/8", 2", 2-1/8"