1.Stainless spring steel wire 2.Material:316L 3.wire diameter: 12/14/16/ ... and safe transport of your product to your side.------------------------------------------------------------------Stainless Steel Spring Wire (SPR)1) Standards: GB, AISI2) Grade: 200 Series- 201 ... ,202,200Cu, 201Cu 300 Series- 301,302,304,304H, 316,316l 400 Series- 410,416,420 ...