A receiver hitch on a vehicle is extremely useful for pulling a trailer, a bicycle rack, etc - but if it is full of dirt or rust when you want to use it that is just inconvenient. This is for a 1-1/4" square receiver hitch receiver. It slips in and wedges so it does not readily fall out yet you can pull it off when you want to use the receiver hitch.Print in a black material to match the existing hitch or your color of choice. Clean up the print as necessary - Size the 4 interference lumps on the sides of the insert-able portion as needed so that it slides in with a little force and has a snug fit.