THIS IS A MINT NEW PAIR OF RUBBER BICYCLE TUBES FIT S7 RIM TIRES AND MANY OTHERS. GREAT QUALITY, THE SIZE IS 20 X 1 3/4 or 20 x 1.75, IT IS SCHRADER VALVE. THEY FIT S7 SCHWINN BICYCLE RIM TIRES AND MANY OTHER 20" TIRE. YOU WILL GET TWO TUBES. ALSO, I HAVE ALL OTHER SIZE OF TUBE IN MY EBAY STORE. IF YOU NEED ANYTHING OUT PLEASE LEAVE ME A MESSAGE ON EBAY.
JJ - 6307