... bronze,copper alloy Ferrules/brass sleeve bushing Used for king pin kit. Brass Sleeve/Bushing 1.Material: copper,tin,zinc, ... --surface treatment---packing---delivery 5.Application : can used on king pin kit, autos , tractor , and ships 6.Advantages: (1)Years' ... : CNC , automatic lathe, thread rolling machine ,punching, laser dutting , cold header.ect. (5)OEM is supported (6)Packing: can according to ...