MACHINERY SKATES SOLD IN PAIRS. Machinery skates have many uses. Great for keeping a trailer hitch from dragging on the ground scraping the asphalt and concrete. Also designed to help minimize damage on chrome tail pipes that happen to be dragging underneath a vehicle. You can move furniture and other equipment when using the machinery skates. There is not much you can’t do with the machinery skate try it out today! Dimensions 7″L X 3 1/2″ W X 1 3/4″H. Also available in pink!