Maxxis welter weight road 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 size colour valve weight 700 x 1825 27 x 78 1 black presta 48mm 84g 700 x 1825 27 x 78 1 black presta 60mm 85g 700 x 1825 27 x 78 1 black presta 83g 700 x 3545 27 x 1 38 1 34 black pr