Step Drill Bit 3-13MM, Metal Drill Bits HSS Cobalt Step Bit For Metal, Multiple Hole Drilling Cone Drill Bit with Quick Change Hex Shank and Double Spiral Flute, Stepped Up Bits For DIY Lovers

Step Drill Bit 3-13MM, HSS Cobalt Step Drill Bit For Metal, Multiple Hole Drilling Cone Drill Bit with Quick Change Hex Shank and Double Spiral Flute, Stepped Up Bits For DIY Lovers YOKOCUT step drill bit HSS M35 with cobalt added coating. 100% Satisfaction Guarantee: Every YOKOCUT product includes 60days money-back & 24-month warranty and a friendly customer service. Perfect Step Drill Bits suitable for drill holes in various material： within 3mm/0.12 inch (Iron Plate, Copper Plate, Aluminum Plate); within 5mm/0.2 inch (Wood, PVC sheet, Insulation Boards). Not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls etc. HSS combined with a cobalt added coating. More capable and durable. Two-Straight Flute Design for smoother cutting. High Step design let you feel the stop and never drill bigger in mistake. HSS Step Drill Bit (3-13mm ) has a 6.35mm quick change hex shaft drives are suitable for all kinds of for home DIY power drills.