Muc-Off Ultimate Tubeless Setup Kit Description: The Muc-Off Ultimate Tubeless Kit contains everything needed to get a tubeless-ready wheelset set up and ready to roll. Once you go tubeless, you'll never go back. Note: Make sure to check the internal width of your rims before purchasing. The road/gravel kit is deigned for use on rims ranging from 19-21mm in internal width. Features: Contains everything you need to complete and optimize your tubeless ready wheel and tire set up Once setup, instantly seals punctures up to 3-4mm in diameter CNC machined, black anodized presta valve stems Sealant pouches fit directly over the valve stems for easy installation Includes: Tubeless Rim Tape (21mm Width) (2) Pouches of Muck-Off No Puncture Sealant (2) CNC Machined Tubeless Valve Stems