● kurosusinningu treatment is applied to point, no center punch needed so that makes them the perfect 食i込mi is fast, sharp and durable. ● blade diameter (mm): 3.3 ● groove shank length (mm): 45.0 ● Total length (mm): 73.0 blade diameter (mm): 3.3 ● Effective processing 3d depth: (diameter x 3 times ● of throwing Material: Stainless Steel. From general steel ● 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