Lead-Free Pewter US Air Force (USAF) Gremlin Bell Great gift for your Biker. Back side of Bell embossed "US Air Force" Give it to a rider as a gift and you double the protection. Comes with a story card, key ring, and zip tie to connect it to your bike. Measurements: 1" tall x 7/8" wide. The Legend: Legend has it that a small bell attached to your motorcycle, close to the ground, catches the Evil Road Spirits. The Little Gremlins live on your motorcycle causing all kinds of mechanical problems. The cavity of the bell attracts these Evil Spirits, but the constant ringing drives them insane and they lose their grip and fall to the ground. (Have you ever wondered where pot holes come from?)