"This 2-pack of heavy-duty Ironton Aircraft Wheel Chocks is designed for use chocking the wheels of aircraft or ground equipment, or for anchoring large pipe. Tough ribbed rubber construction. Length in. 10, Rope Length ft. 3, Working Width in. 10, Reflective Yes, Height in. 4 5/16, Includes qty. 2, Material Rubber. Reflective tape on 3 sides for high visibility 3 ft. nylon rope connects the pair of chocks to provide easy, safer removal 10 in. L x 5 in. W x 4.3 in. H small size chocks"