The Great Wall Straight Shank Cobalt Twist Drill Bit Set for Stainless Steel, High-Speed Steel Twist Drill Bits, 25 Pieces, Model 672225

Double rear angle head design (135°) for faster and more precise drilling

Laser-engraved steel shank for standard compatibility and durability

Surface treated with yellow baking for enhanced wear resistance and high-temperature tolerance

Fully ground manufacturing process ensuring sharp cutting edges and smooth chip removal

Excellent cutting performance with long service life

Fast drilling speed with accurate and stable hole making

Suitable for drilling various materials including aluminum alloy, mold steel, copper plate, steel plate, and cast iron

Available in multiple sets including 6, 10, 13, and 19-piece kits

Sizes and specifications are precise and varied to meet different industrial needs

National-level specialized and innovative "Little Giant" enterprise