THIS IS A OLDER TYPE REFLECTOR. IT'S MINT NEVER USED, USED ON MANY OLDER BALLOON TIRE COLUMBIA BIKES, USED ON THE REAR FENDER. THIS ITEM CAN BE USED ON MOST BICYCLES. IT'S 3" TALL & 2" WIDE. SUPER NICE CHROME WITH 2 REFLECTORS, VERY NICE JUST ASTONISHING. EASY TO MOUNT TO MOST BICYCLE FENDER.