Maxxis welter weight mtb tubemaxxis welter weight tubes are engineered for aggressive riders who require durability in their inner tubes the middle weight tubes in the maxxis line are targeted to all disciplines of riding features 090mm thick walls puncture resistant weight 275 x 192 35 presta 48mm 192g 275 x 192 35 presta 191g 275 x 2225 schrader 223g 275 x 2225 presta 222g buymaxxis wheels tyresfrom chain reaction cycles the worlds largest online bike store