Tubeless MTB conversion kit available in 26" or 29" dimensions. Simply stretch the strips over the rims, mount the tires and trim off the excess rim sealing strip that's protruding from the sides of the tire once the tire is mounted and sealed. Kit includes Protect'Air Max sealant (enough for both wheels) is included as well as two Tubeless valves. The strips seal the spoke holes as well as the beads of the rim.