K23 SRC 22 tpi Wire tire is a great replacement tire for older 3-speed Schwinn bicycles. 26X1 3/8 - 1 1/4 (37-597 ISO) size. This is an obscure size found on some Schwinn bicycles from the 1960's and 70's. This tire is NOT compatible with 26" x 1 3/8" (590 ISO) rims, nor with 26" (559 ISO) mountain bike rims. Match the ISO measurement on the sidewall of your current tire for proper compatability.
UPC: 47853638127