HSS Straight Flute Taper Step Drill Bit with High Speed Steel Hex Shank Double Fluted Drill Bit Wood Hole Cutter Drilling ToolsFeature: The two-slot stepped tip design is optimized for high-speed cordless drilling, providing greater speed and control. The laser engraved mark can be easily stopped at any size of hole; The quick tap tip provides fast, accurate starting and generates less heat, resulting in longer drill tip life. Versatile: Ideal for metalworking, step drills are suitable for cutting metals such as stainless steel, plastic, copper, and aluminum, as well as other materials such as wood and plastic. Industrial quality: Clog-free, optimized for high-speed cordless drilling. It features a dual-slot design that's 2x faster than the full-time competition, lasts 4x longer, and has 50% more holes for each battery charge. Ideal for drilling large and small diameter holes in steel and plastic. Specification: Specifications: 7/8 to 1-3/8" with 3/8" Hex Shank Size: 3/16", 9/32", 3/8", 7/16", 17/32", 5/8", 11/16", 25/32", 7/8", 29/32", 31/32", 1", 1-1/16", 1-1/8", 1-5/32", 1-7/32", 1-9/32", 1-5/16", 1-3/8" Material: HSS M2Surface Treatment: NitridingShank Type: 3/8 Hex Shank Length: 88mm/3.46inNote: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Please allow 1-2cm measuring deviation due to manual measurement.1 X Step Drill Bit