... steel, Steel alloy, Aluminum alloy, Brass, Copper or customer's requirementSizeM4-M30Surface Treatment Plain, Cr, Black Cr, Ni, Gold ... HDG, Dacrotized, etc.PackingCarton/ Pallet, or according to customer's requirement.Software for Drawing Pro/E, UG, AutoCAD, Solidwork 2001, CAXAQuality ... on time delivery, Also we can produce according customer's drawings and sample.Welcome to contact us. DIN ...