Features:
1) Diameter: 3.94mm
2) Materials: Carbon steel. 65Mn(ASTM 1566) 70# (ASTM 1070)
3) Mainly used in automat machine. There are 17 kinds of springs in total
4) All of high quality
5) the surface is zinc

Packing: Wooden boxes
Language Option Switch languge to help reading: French German Italian Russian Spanish Portuguese French
German
Italian
Russian
Spanish
Portuguese