No flats joes xc narrow tubeless conversion kitfits narrow xc and cx rims 26 and 29 15 17mm inner rim width color coded white joes tubeless rim strips are specifically designed to secure the tire inside the rim with no loss of air from the rim weight 45 grams per strip including valve fits rims with frenchpresta valve hole openings this kit contains all you need to convert two 26 or 29 standard mountain rims and tires to tubeless and keep you riding tubeless for years features 240