... size tolerance,long fatigue life, wide range of powder coating 1 more thatn 30 Years Experience 2 high tensile material used ... -defect,High quality4 Product Cover Spring and Stamping Part,Such as Suspension Spring,Clutch Spring,Valve Spring,Compression Spring,Tension Spring,Torsion Spring 5 TS16949,ISO14001Certificated motorcycle shock absorber spring