When driving on small gravel, small stones inevitably get into the tread of the tire. Some of them fly out on their own while driving, while others get stuck tightly and can only be removed with a tool. A stuck stone makes an unpleasant scratching sound and can also damage the tire. The tool is a long screwdriver with special tread cleaning teeth on the end. The tool is 17 inches long. The handle is plastic with rubber inserts.