Battery Spring 1.Dia:0.01-50mm 2.material: various of steels 3.OEM offered 4.high quality and reasonable price ... spring/strong forged steel link chain for slings Specification1.made of carbon steel,stainless steel, manganese steel wire, nickel wire, ... Precise tensile strength testers, and magnetic powder flaw detectors MOQ5000PCSTerms Of PaymentBy T/T, 30% down payment before manufacture,the balance ...