... price high quality and quick delivery&ISO9001:2008 Industrial compression spring ,electric lift spring ,Specifications:1.ISO9001:20082.Material:60Si2CrA,60Si2CrVA,60Si2MnA,stainless ... , left7. No. of coils:Unlimited8.Application:Excavator, digger machine, car, train, shakeout machine, etc.9.Color:Black,white,blue,red, yellow, grey ...