We custom manufacturer all kinds of wire diameter spring. 1)Wire Dia.:0.01mm-40mm. 2)Material:carbon steel;spring steel;stainless steel,alloy steel. 3)We can do OEM. we are the manufacturer of spring from china,our products including:compression spring,extension spring,torsion spring,wire spring,Disc Springs and etc. May i ask do you have drawing of the Springs which you required ? So we can quote you the accurate pricing.