Rail spring clips/ Tension clamp/ Elastic clips/ SKL clips/ Pandrol clip/ Nabla clip Type : SKL1, SKL3, SKL12, SKL14, e1609, e1809, e1817, e2055, e2056, e2009, e2001, e2006, PR401, PR309.... Raw material : 38Si7. 60Si2CrA, 60Si2MnA Finish: plain( oil) , black paint, color paint, zinc, H.D.G.etc.