order bynamepricetags- select -inner tube AV AUTHOR Tube AT-CMP-12" AV90/45 Tube AUTHOR 12x1.50-2.20. 100% all butyl rubber made with extremely air-tight. Keep air pressure in bicycle tyre longer than cheaper tubes made ... AUTHOR Tube AT-CMP-12" AV32 Tube AUTHOR 12x1.50-2.20. 100% all butyl rubber made with extremely air-tight. Keep air pressure in bicycle tyre longer than cheaper tubes made ... pg. 1 of 11