Starter spring/Springs for starter assy of engines 1) Material: 62Si2MnA 2) Thickness: 0.4-0.7mm 3) ... .4-0.7mm3)Width:4-8mmOur company are a professional manufacturer specialized in producing all classes of springs for Industrial machine,(ie ... Liner, Measuring Tape,meters and toys, cars safety belts, gas, diesel oil , electrical machine ,start-up machine,etc.),constant force spring ...