Hymnorq Cobalt Steel 9 Step Drill Bit, M35 Grade 5% HSS Co, Metric Size 3mm to 12mm, Dual Spiral Flutes and 1/4 Inch Hex Shank, Drill and Enlarge Holes in Stainless Steel Iron Hard Metal Sheet
COBALT STEEL - Manufactured from solid M35 grade cobalt steel, with 5% cobalt added to create a hardened heat-resistant alloy, for much faster cutting and extra long life span.
15 STEPS - The step bit comes with 15 sizes ranging from 4mm to 32mm, so you can drill up to 15 holes of different diameters with one bit, saving you time and efforts to change bits.
FOR STAINLESS STEEL - Ideal for drilling new holes or and enlarging existing holes on stainless steel as well as softer metals like iron, brass, copper, aluminum, etc.
GOOD PERFORMANCE - The dual-flute design provides greater speed and control along with jam-free performance. The fast-start no-walk tip allows you to drill without a center punch.
1/4" HEX SHANK - Compared to bits with round shanks, this 1/4 " hex-shank step bit can be gripped more tightly by compatible drills and screwdrivers for greater torque.