1.Finish : Electroless nickel plate .0003~.0005 thick
bake at 350f for 2.5hrs.per
2.material certification required from the vendor.
3.bend radii .03 typical to function dimensions.
packaging per e.p.s 50
4.Spring is handed: left hand shown , right hand opposite.
5.music wire with zinc
6.Cycles to failure :3000000 minimum ref