hgudesign Step Drill Bit for Steel, 4Pcs 1/8 to 7/8 Drill Bit Set, Cobalt Drill Bit, for Stainless Steel, Metal, Aluminum, Wood, Total 50-Steps. 4Pcs 4P201_202

50 Holes Total / 4 Bits / COBALT MATERIAL / for Stainless Steel / Ranges from (1/8"-1/2") & (3/16"-7/8") 【Stainless Steel 】 These Cobalt Drill Bits (1.3243 STEEL) offer 6X the lifespan and 2X the speed. Suitable for Stainless Steel, Metal, Galvanized Steel, Aluminum, Iron, Wood, PVC, and Copper. A choice for numerous hard metal applications. 【M35 Cobalt Quality】 Ideal for Stainless Steel, Metal Sheets, Wood, Plastic, Aluminum Sheets, Copper, and more. Drills through stainless steel effortlessly. [A Reliable Tool] This spiral step bit is incredibly . It effortlessly pierces through the steel base of zero-turn mowers, cold rolled steel, lug bolts, old racks, iron rotors, tractor buckets, washers, heavy steel loader buckets designed for tractors, hydroponic , water pipes, and cabinets. 【50 Hole Sizes】 Features 2-Flutes for strength and faster chip removal. Includes sizes from 1/8" to 7/8" in various increments.