Guardian Industrial Pallet Jack Truck Chock Rubber 11.5 x 11.75 Features: Secure pallet trucks and pallet jacks from free-rolling in the warehouse or over an inclined surface with an innovative rubber wheelchock. Includes a 1 Year Manufacturer's Warranty. Height: 2.000 Width: 11.750 Length: 11.500 Weight: 5 lbs Electrical Outlet Plug Type: Wheel Chocks