toolant Four Spiral Flute Cobalt Step Drill Bit(Pro Max), 4-12mm Impact Ready Four Spiral Flutes Unibit Step Bit, 6mm Hex Shank Unibit for Metal, Stainless Steel, Aluminum, Wood, Plastic

M35 COBALT HSS STEP DRILL – Prefect for Stainless Steel/Metal Sheet/Wood/Plastic/Aluminum Sheet/Copper and other metal sheets.
ALUMINUM TITANIUM NITRIDE COATING – With 35 Gigapascal(GPa) Nano Hardness harder materials can be cut and higher cutting speeds can be achieved.
FOUR SPIRAL FLUTE – Four cutting blades design guarantees a faster and smoother cutting. Feels like a hot knife through butter!
1/4″ HEX-SHANK QUICK CHANGE – Quick release slot to eliminate slipping
12 STEP SIZE – Includes 3/16″,1/4″, 5/16″, 3/8″, 1/2″, 9/16″, 5/8″, 11/16″, 13/16″, 7/8″