... Anti-corrosion co-friendly ISO9001:2008; tolerance: +/-0.0001mm high quality precision stainless spindlesSpecifications:1) Suitable for various automotive, electronic, ... optional can be as requirements6)Material: iron/aluminum, copper, alloy, carbon steel, 18CrMnTi,20CrMnTi,20Cr,20CrV,1045 steel, others ... output of over 1 million pieces per month. high quality precision stainless spindles