U-shaped and u-shaped rail clip with front and rear camber, front ends to withhold on the bottom edge of the rail, then ends into iron slots after the back-end. Elastic raised relates to a fastener device installed in the adjustment of railway concrete sleeper used on rail height and gauge and withhold a fixed rail installation, consists of an insulated buffer pads, high-standard adjustable plate gauge and insulation mats, as well as iron, screw spikes and clips form. Raised with different specifications plate gauge and insulation pads can easily adjust the height of rail and gauge through the screw spike top nut clamping spring to withhold tight rail. The utility withheld power, easy adjustment and a wide range of adjustment.Http://railsteels.Com/rail_clip_16.Html.