No flats joes am tubeless conversion kitfits all mountain rims 19 25 mm inner rim width joes tubeless system is the most important upgrade available for a dedicated cyclist weight 60 grams per strip including valve this kit contains all you need to convert your standard rims and tyres to tubeless for 29 inch mountain bike wheels the following items are included in this kit to keep you riding tubeless for years 240 ml joes super sealant with micro sealing particles 2 high quali