(1)product name:spring steel wire, (2)size:0.3-14mm, (3)raw material:45#,55#,60#,65#,70#, ... according to the customer request.Application:suitable for making steel wire rope,cables,wire mesh,spring so on.This product has been enjoying high ... strength variation narrow.it is an ideal material for spring used in bicycle ,motorcycle,funiture and electrical appliance. 0.3mm to 15mm spring steel wire