A manufacturer of bicycle parts with a tradition of over 60 years
As a manufacturer specializing in brakes, we are developing products with safety and reliability in mind, and started as a rim brake manufacturer in the early Showa period. Developed caliper brakes with "DIA" brakes as the first in-house brand after the war.
In 1965, a purely domestic "DIA-COMPE" caliper brake was born using a new forging technology developed in-house.
This is a cone nut for truck hubs.