... ,SKL clip,e-clip,W-clip.DTV-II rail clip we supply:Product name: DTV-II rail clipMaterial: 60Si2Mn, 38Si7, 60Si2CrHardness Rockwell ... , black, painted, bituminous coating or other specified by customersSeries:1) I- clip, II- clip, III- clip, IV- clip, V- clip, VI- clip ... , VII- clip, VII-I clip, E 2007 AV, Anti creeper, PR clip ...