RUKO 3-blade spiral step drill, 12mm, high speed steel, 101-350-9, 1 piece

Catalogue number: 101-350-9 Features: ●Three-blade design allows stable drilling without load or vibration. Applications: ●Cutting materials: iron (strength 900N/mm2 or less), aluminum, brass, plastic (2mm for plastic only, up to 4mm for others) Specifications: ●Step width (mm): 4 ●Number of steps (steps): 9 ●Shank diameter (mm): 6 ●Drilling dimensions (φ): 4, 5, 6, 7, 8, 9, 10, 11, 12 ●Surface treatment: non-coated ●non-coated Material/Finish: ●High-speed steel Set contents/Accessories: ●None