This replacement raw steel weld on rear Slipper spring hanger is perfect for utility trailers or enclosed trailers. This rear hanger welds to the frame of your trailer to attach your slipper springs. This hanger can only be used on single axle trailers as the rear hanger. This spring hanger is used on 1 ¾” wide slipper spring. The slipper end of the spring simply slides into this hanger.