Professional Quality Titanium Coated M2 HSS 9/16- 1"-Drill Bit, High speed, titanium nitride coated steel, Stepped in eight 1/16" increments: 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", Fluted design for fast, smooth cutting, Automatically deburrs holes as you drill, 9/16- 1" Capacity.