... Finish:bright,soft,hard Packing:coil,spool etc Stainless steel wire Stainless Steel Spring Wire (SPR)Application: Springs Steel grade: 302, 304, 316, 130M, 304ES, 201CU, 631 ... and helix, it can be widely used for rolling various precision springs. Stainless Steel EPQ Wire(EPQ)Steel grade: 304, 316, 304ES, 200CU-3( Ni ...