GLOBAL INDUSTRIAL FLOOR LOCK MOUNT TO THE UNDERSIDE OF PLATFORM TRUCKS LIFT TABLES AND CARTS TO HELP IMMOBILIZE WHILE LOADING OR UNLOADING. SIMPLY STEP DOWN TO LOCK STEP AGAIN TO UNLOCK. ZINC-PLATED STEEL WITH 3"" RUBBER FOOTPAD. 4"" X 4-1/2"" TOP PLATE WITH SLOTTED HOLES FOR 2-5/8"" X 3"" TO 3"" X 3-5/8"" MOUNTING. NOTE HARDWARE IS NOT INCLUDED.