Tubolito S-Tubo BMX Tube - 20 x 1.5-2.5" 40mm Schrader Valve OrangeTubolito S Tubo BMX Tube 20 x 1. 5 2. 5" 40mm Schrader Valve Orange. Fly high and rock the ramp with the lightest and smallest BMX tube worldwide with an 80% weight savings compared to standard rubber rubes. Tested from and developed with the worlds best BMX riders from all disciplines such as UCI World and European Champion Irina Sadovnik these low weight tubes make high jumps and bar spins a piece of cake. S Tubo series tubes are intended for spare