No flats joes tubeless rim strips 2 high quality rubber tubeless strips with integrated presta or schrader valves with removable cores features includes spare auto valve core and auto valve keycap for easy removal of the core available in presta valve 18 23mm rims schrader valve 18 23mm rims presta valve 16 17mm rims for 2 26 or 29 inch mountain bike wheels fits all standard xc rims 18 23mm inner rim width weight 65 grams per strip including valve weight 45 grams per strip