RUKO 2-blade spiral step drill (hexagonal shaft type) 12mm high speed steel 101050-9H 1 piece

Catalog number: 101050-9H Features: ●High-quality material is used, allowing stable drilling without load or vibration. Specifications: ●Step width (mm): 4 ●Number of steps (steps): 9 ●Number of teeth (pieces): 2 ●Shank diameter (mm): 6.35 ●Drilling dimensions (φ): 4, 5, 6, 7, 8, 9, 10, 11, 12 ●Total length (mm): 65 ●Surface treatment: Non-coated ●Non-coated Material/Finish: ●High-speed steel