... protection ISO9001:2008 & 2000; minimum tolerance: +/-0.0001 bronze gear and wormsSpecifications:1) Suitable for various automotive, electronic, ... , others optional can be as requirements6)Material: iron/aluminum, copper, alloy, carbon steel, 18CrMnTi,20CrMnTi,20Cr,20CrV,1045 steel, others ... High-precise Stainless Steel products, Pins made of Iron, Copper and Aluminum, and so on, with an output of ...