... Made of Carbon SteelMaterial: carbon steel Surface treatment: nickel-plated Function:spring piece nut block can be staffed ... Carbon steel,Stainless steel spring nut Finish:zinc,chrome,nickel spring nutQuality:High-quality raw material, strict inspectionMinimum Order ... in North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Asia,Western Europe,US, South Korea, Russia and ...