Stainless Steel Clutch Spring 1:precision clutch spring, offering OEM Service 2:MOQ:1000PCS 3:Dia:0.1mm- ... , 60Si2CRVA, 55CrSiSurface treatment plate gold, silver, white, red yellow, blue, green, purple, black, etc., salt spray test more than 100 H ... when see the copy of B/L Stainless Steel Clutch Spring