... ,copper alloy Ferrules/brass sleeve bushing Used for king pin kit. Brass Sleeve/Bushing 1.Material: copper,tin,zinc,lead ... treatment---packing---delivery 5.Application : can used on king pin kit, autos , tractor , and ships 6.Advantages: (1)Years' experience ... according to drawing, sample or specific industry standard. (3).Professional engineer team and machines promise good quality (4)Machines: CNC ...