In 1969, OHMI SEIKI was established on the idea that we want to please our customer by producing custom made items if there is no manufacturer doing it.

The spirit is still taken over. OHMI SEIKI are keeping on providing products that meet customer needs by visiting the production site and hearing real voices.

OHMI bits are used by customer of all over the world because we also supply of OEM products to driver manufacturers.

Recently electric screw drivers have been making great progress. However, no matter how good tools are, they cannot show their great ability if the bits and sockets are low quality.

Bits have to transmit proper torque to screws repeatedly, so the quality of bits and sockets are very important for tightening screws.