Product Name Ball head screw Specification According to your requirement. Surface Treatment Zn-plating,Ni-plating,Cr-plating,Tin-plating,copper-plating, the wreath oxygen resin spraying, the heat disposing, hot-dip galvanizing, black oxide coating, painting, powdering, color zinc-plated, blue black zinc-plated, rust preventive oil, titanium alloy galvanized, silver plating, plastic, electroplating, anodizing etc. Material Aluminum, Copper, Iron, Stainless Steel, Aluminum Alloy, PD, APET, PVC, Plastic, SPCC, Hot/Cold Rolled Steel Plate /Steel Belt etc. Packaging Inner plastic bag, outer carton box, and we can also pack products according to your requirements. Processing stamping, punching, bending, welding, drilling, tapping, wire cutting, EDM, turning, cnc machining, cnc milling, spring, screw, assembling, etc.