RUKO 2-blade spiral step drill 1-1/8 cobalt high speed steel 101709E 1 piece

Catalog number: 101709E Features: ●High-quality materials are used, allowing stable drilling without load or vibration. Applications: ●Cutting materials: Steel plate (strength 900N/mm2 or less), brass, aluminum, plastic (up to 4mm) Specifications: ●Step width (mm): 4 ●Number of steps (steps): 2 ●Drilling dimensions (φ): 7/8, 1-1/8 ●Surface treatment: Non-coated ●Drilling dimensions: 7/8, 1-1/8 ●Shank diameter: 3/8 ●Non-coated Material/Finish: ●Cobalt high speed steel