Hunter Engineering Alignment 

DSP 300T  DSP300 DSP 500 DSP500T DSP700

Trailer Gage Kit - HD Trailer Alignment Kit

New Kit, Damaged in freight.  Only need a 1.5" square tube piece you can get local and drill for mounts.
The milled end of the tube is not damaged and can be transferred to new tube piece.

Mounts to King Pin on front of trailer to align the trailer with the Hunter Sensors.