Old stock 3Giken duplicate Bench chisels (Oirenomi) 30mm 掘出し物 3技研 替刃式鑿 30mm

replaceable blades /替刃: 30mm (2pcs)・ (2枚入り）    

Blade material made of ultra-fine particle special steel for outstanding toughness
Thick blade can be sharpened even though it is a replaceable blade type.
The 3D shape molding method patented in the U.S., U.K., Japan, and many other countries is used.
　

超微粒子特殊鋼の刃材で強靭性抜群
替刃式なのに厚刃なので研ぐことも可能

米国・英国・日本をはじめ各国に特許を有する３次元形状成型法を使用。