Self-adhesive mounting plates withstand up to 4 hundred lbs. of pulling force Easy-to-install kits include heavy-duty, vinyl-coated steel cable, mounting plates, metal lug and lock. Use additional mounting plates to expand your kit. The 2 Plate Kit (part number R101) secures one piece of equipment. Includes two 3 x 2" plates, 3 ft. cable and push button combination lock.The 4 Plate Kit (part number R102) secures 3 pieces of equipment. Includes three 3 x 2" plates, one bottom plate for mounting to underside of a keyboard, 3 ft. cable and push button combination lock.Mounting plates are available and sold separately and available in 2 styles: R107: Standard mounting plate; 3H x 2"W R108: Bottom mounting plate, attaching under keyboard; 3H x 4"W