Good hefty ball peen hammer

by Keith
(Tenn)

A lot of times the pins on a trailer are slightly bent and you need to give them a few whacks to free them up.

Along those same lines, spray silicon lubricant for the rails or WD40 and some tire chocks will come in handy on
occasion.

Also an extension handle for pulling the 5th wheel release handle, keeps the grease off your clothes.

Tire knocker and pressure gauge.

Always keep some air hose seal rings and spare bulbs on board for all the lights specific to your truck.