... 500 pieces SpecificationAccording to your requirement.MaterialStainless steel, copper, brass, carbon steel, aluminum (according to customer's requirement.Surface ... integrationMain ProductsDowel pins, inserts, pin, automobile fittings, shaft, nut, sleeve, door knob ,toy accessories etc. Producing EquipmentCNC machine SHENGYU & ... click our website: http://gdsx.en.alibaba.com brass bushing and inserts