Nutrak Self-Sealing Schraeder Valve Inner Tube 20 x 1.75 - 2.125

Self-sealing inner tube that will minimise any inconvenience from punctures
Contains a liquid sealant that will seal a puncture in the tread area up to 3 mm wide, upon rotation of the wheel Welded butyl rubber construction Great value, puncture resistant replacement tube for children's cycles Schrader 'car type' valve