Guardian World's Greatest Biker Mom Motorcycle Biker Luck Gremlin Riding Bell or Key Ring Lead free Pewter bell has strong jump ring to withstand long rides. Use key ring for hanging on your bike or to hang your keys on. Front says "WORLD'S GREATEST BIKER MOM". Measurement of bell and jump ring only: 1 1/2" Height x 1" Diameter Back is blank. Comes with key ring and gift pouch.