toolant Four Spiral Flute Cobalt Step Drill Bit(Pro Max), 4 22mm Impact Ready Flutes Unibit Bit, 1/4" Hex Shank 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 10 STEP SIZE - Includes 4, 6, 8, 10, 12, 14, 16, 18, 20, 22mm 90 DAYS WARRANTY - If you are not fully satisfied for any reason, please contact us for 100% refund or replacement. If the hex shank snap off, please contact us for replacement.