THIS IS A VINTAGE AUTHENTIC SCHWINN ITEM, IT'S 3-1/4 INCH WIDE STANDARD SIZE ON MANY SCHWINN MIDDLE WEIGHT BIKES. THIS ITEM CAME ON MANY STINGRAYS AND ROAD BIKES AND OTHER OLDER VINTAGE COASTER BRAKE BIKES AND OTHERS. VINTAGE NOS NEW OLD STOCK NEVER USED VINTAGE ITEM USED ON SCHWINN JAGUAR MENS AND MANY GIRLS BIKES AS WELL, THIS ITEM WAS FOUND IN A SCHWINN WARE HOUSE YEARS BACK, THIS FITS ON TOP OF THE FRONT FORK, RARE TO COME BY IN NEVER USED, DO YOU WANT THE BEST HERE YOU GO, WHAT A GREAT DEAL.