This auction is for Uline Ultimate Rubber Wheel Chock – 8″ x 8″ x 8″! Dock Safety! Brand NEW H 1591! FEATURES:ReversibleCONSTRUCTION:Assembled on 3/4″ bolts.Pressed between 1/3″ steel plates.SPECIFICATIONS:Meets OSHA requirements Please add $14.99 for shipping and handling