Small wheel chock to maximize stopping ability for 5.00-5 tire. Height = 1.5 inch, width = 4.5 inches, weight = 0.19 lb (86 grams). N-number engraving. This price is for one chock.. and in this case it means one piece. If you needed to chock both the front and back side of a tire you will need two chocks. Material is UV resistant plastic. See a larger view of the testing data in pdf format in the Documentation/Installation link at the top of the page.