We have started drop forging factory in 1939 making airplane parts. After WW2, we started hand tool manufacturing. We are the first manufacture for adjustable wrench to be certified as JIS factory in Japan. Since then, our company has been recognized for high quality hand tool manufacturer. We make our tools from drawing to final product by ourselves including molding, and heat treatment. Our company is ISO 9001 certified for maintaining efficient operation. Our main products are adjustable wrenches, ratchet wrenches, electric drill sockets, pliers, and wrenches. We keep innovating to satisfy many professional needs and requests.