Cross thinned at the tip for quick cutting and superior sharpness without the need for punching. Material: General steel, stainless steel. Blade diameter: 0.19 inches (4.7 mm). Groove length: 2.3 inches (59 mm). Total length: 3.5 inches (89 mm). Shank diameter: 0.19 inches (4.7 mm). Effective processing depth: 3D (3 x 3 mm). High-speed steel (HSS).
●先端部にクロスシンニング加工を施してあるので、ポンチ不要で、食い込みが早く切れ味が抜群です