... ,if you SpecificationAccording to your requirement.MaterialStainless steel, copper, brass, carbon steel, aluminum (according to customer's requirement.Surface ... CNC/AUTO lathe, springs, shafts, screws, stamping parts and other metal parts. Our main production modes are designing and proofing ... our website: http://gdsx.en.alibaba.com stainless steel /brass bush ,cnc bushing ,inserts and lathe parts