M35 Cobalt Step Drill Bits 10-Piece Set for Stainless Steel

M35 Cobalt Step Drill Bits 10-Piece Set for Stainless Steel Description

Highlight description: 【Double Spiral Flute Design】Our step drill bit adopts double spiral flute design, enables faster drilling, smoother surface finish, and efficient chip removal, reducing clogging on thin metal sheets 【High Hardness Coating】This step drill adopts high hardness TiAlN coating surface, improves wear resistance, extends tool life, and increases cutting speed 【Suitable for Different Material】This double spiral flute step drill bit adopts cobalt containing high speed steel core, which is heat resistant and exceptionally hard, optimized for stainless steel, metal alloys, wood, and plastics 【Precision Drilling】This step drill tool provides precision drilling from 4 mm to 22 mm/5/32-7/8 inch (steps : 4-6-8-10-12-14-16-18-20-22 mm/5/32 inch, 15/64 inch, 5/16 inch, 25/64 inch, 15/32 inch, 9/16 inch, 5/8 inch, 23/32 inch, 25/32 inch, 7/8 inch), one tool can drill holes of various sizes 【Quick Change】Our step drill bits hole expander can be instantly locked into a standard chuck, compatible with all power tools, allowing for quick drill bit changes and delivering powerful torque Detailed description: Description : This step drill bit features a double spiral flute design for fast drilling and improved work efficiency. It uses a cobalt containing high speed steel core, which is heat resistant and exceptionally hard, suitable for stainless steel, metal alloys, and more. Features : 【Easy to Operate】The step drill bit is easy to use and allows for quick drill bit changes. Specification : Product Name : Step Drill Bit Material : Cobalt Containing High Speed Steel Size : Overall length 78 mm/3.07 Inch, shank diameter 1/4 inch/6.35 Mm Parts List: 1Step Drill Bit 4-22 mm (5/32-7/8 inch)