Eight Tool

We are the only specialized manufacturer of hexagon wrenches-Allen keys in Japan and also one of the only two manufacturers in the world specializing in it.
Since our founding, we have been supplying our products with high quality and customers’ satisfaction under the product quality-oriented system.
Our top priority is to satisfy wide varieties of customers’ needs in whole the world by producing their demands.
Hardness and Viscosity
The perfect balance of hardness and viscosity is our know-how as a specialized manufacturer.
What determines the quality of hexagon wrenches-Allen keys? One of the elements is torsional strength.
To achieve for producing infrangible hexagon wrenches-Allen keys, it needs the material that the best balance of hardness and viscosity. We adopted special alloy called SNCM+V as the material after many years of research & development. This special alloy hexagon wrenches-Allen keys are only available from us that produces 1.2 million products per month.
Another important element is heat treatment processing to make the best quality hexagon wrenches. By the special heat treatment processing, the calculated strength and viscosity can be realized. We are recognized from domestic and overseas customers by this special processing and other advanced technologies.