... best to satisfy you with most competitive price . LIIGHTEST LOAD SPRING --BLUEThe mold springs are make with high tensile mateial strictly ... life,low prices.Different color has different compress function.Coil spring including TF,TL,TM,TH,TB,TR and so on ... ,alloy steel .4)Applications:automobile,bicycles,production equipments,furnniture ,etc.Product details:1)The diameter of mould spring is from 0.2mm ...