... :Nylon&steel for the roller 2. shaft 11mm on roller 3.Used as garage ... door hardware..Material: Steel and Nylon for the roller.Nylon,2" , shaft 11 mm, L=118 ... cutting,threading, welding, tapping, riveting, grindingSizeAccording to customer's desingThickiness0.5mm ~12mm, or other special ... IPQC,FQC,QAMouldDepend on customer's require to make the mould.Sample confirmationBefore start mass production ...