50% OFFQUALITY CST SELF SEALING STROLLER PUSH CHAIR INNER TUBES 16×1.75/16 x 2.125YOU ARE BUYING A VERY DEPENDABLESELF SEALINGSTROLLER PUSHCHAIRINNER TUBEFROM CST THATWILL SEAL A PUNCUTRE UP TO 1/8″ IN DIAMETER, SO LEAVE YOUR WORRIES BEHINDGREAT VALUE; THESE RETAIL AT 8.49 EACH SO WE ARE OFFERING YOU THEM AT 50% OFFSUITABLE FOR STROLLERS , PUSH CHAIRS ,WHEEL CHAIRS , GO KARTS ETC ETCTHICKER WALLS THAN MANY INNER TUBES AS THEY HAVE 97mm WALL THICKNESSSIZE: 16×1.75 / 16 x 2.125 (47-305 , 57-305)VALVE ; SCHRADER CAR TYPEWEIGHT: 243grams (approx) EACH