THIS PALLET TRUCK CHOCKING DEVICE WAS DESIGNED TO PREVENT DAMAGE TO CARGO FROM UNSECURED PALLET JACKS IN TRUCKS AND SEMI-TRAILERS. FREIGHT CARRIERS DELIVERY TRUCKS AND ROUTE DRIVERS ALIKE FIND THIS CHOCK TO BE A MANDATORY PIECE OF SAFETY EQUIPMENT FOR THEIR VEHICLES. SIMPLY ROLL THE SKID TRUCK STEERING WHEELS INTO THE STOP AND IT REMAINS IN PLACE WITHOUT TYING OR FLIPPING THE JACK ON ITS SIDE. SAFETY YELLOW RUBBER CONSTRUCTION IS DESIGNED TO GRIP THE TRAILER FLOOR AND WILL NOT SLIP.