RUKO 2-blade spiral step drill 1-3/8 cobalt high speed steel 101706E 1 piece

Catalogue number: 101706E Features: ● Made of high-quality material, it allows stable drilling without load or vibration. Applications: ● Workpiece: Steel plate (strength 900N/mm2 or less), brass, aluminum, plastic (up to 4mm) Specifications: ● Step width (mm): 4 ● Number of steps (steps): 5 ● Drilling dimensions (φ): 7/8, 1-1/8, 1-7/32, 1-1/4, 1-3/8 ● Surface treatment: Non-coated ● Drilling dimensions: 7/8, 1-1/8, 1-7/32, 1-1/4, 1-3/8 ● Shank diameter: 3/8 ● Non-coated Material/Finish: ● Cobalt high speed steel