shaft 1. mtl:sus303 2. eco-friendly 3. size:6*34. ... , carbonadoing, others optional can be as requirements6)Material: iron/aluminum, copper, alloy, carbon steel, 18CrMnTi,20CrMnTi,20Cr,20CrV,1045 steel, others ... centers, High-precise Stainless Steel products, Pins made of Iron, Copper and Aluminum, and so on, with an output of over ...