Winning Bore Step Drill Pyramid Drill 4-39mm RSD-4 1 piece

Catalog number: RSD-4 Features: ● Spiral cut system for improved sharpness. ● Stepped for versatile use. ● One tool can drill holes of different diameters. ● Convenient for deburring, widening holes, and chamfering. ● No center punch required. Applications: ● Workpiece: Iron (up to 2mm), stainless steel (up to 1.6mm), aluminum, copper, plywood, plastic. Specifications: ● Step width (mm): 5.5 ● Number of steps (steps): 13 ● Number of blades (pieces): 2 ● Shank shape: Three-sided (straight) ● Shank diameter (mm): 10 ● Drilling dimensions (φ): 4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39 ● Total length (mm): 109 ● Surface treatment: Non-coated ● Non-coated Material/Finish: ● High-speed steel (HSS) Set contents/Accessories: ● None