THIS IS A MINT NEW AUTHENTIC QUALITY RUBBER REAR TIRE LINER / STRIP. "THIS IS NOT TUBE, IT IS A RIM LINER STRIP". THE SIZE IS FOR 20 X 4-1/4 REAR TIRE OF OCC CHOPPER. THEY ARE A HEAVY RUBBER LINER LIKE NO OTHER, YOU CAN NOT FIND THEM ANY MORE. QUALITY MADE, NOT FAKE. IT'S MINT NEW FOR SIZE REAR TIRE 20 X 4-1/4 TO FIT SCHWINN OCC CHOPPERS. I HAVE THE REAR AND FRONT TIRE AND TUBES IF NEEDED.