Since 1916: Already manufacturing unique screwdrivers to better aplications, such as Ratchet screwdrivers, Precision screwdrivers, Blade Interchangeable screwdriver, Ball grip Cabinet screwdrivers,Bearing Scrapers and even Glass cutter which was unusual at that time. All these screwdrivers were made possible because of our then engineers must have spent most of their times and dedicated for new application tools. Practiced the fully guaranteed service on each of our produced tolls by saying, "Double quantity" shall be reimbursed to the customers if the cause of broken or bent blade were found. Because we were such confident for non-defective tools due to the fact that we used the highest possible materials and heat treated in our facotry.And even customer spec. tools were offered to serve them better and satisfactory with our pride and confidence.