Schwalbe SV20 Extra Light Tube (700 x 18-25mm) Size:40mm Valve which includes the ratchet

which includes the ratchet

making it easy to remove with a cloth

too high a torque and you can crush the component and damage it beyond repair

and the brass check valve is a modified version of the check valve used in the SuperPista Ultimate

sebaceous cysts

Schwalbe SV20 Extra Light Tube (700 x 18-25mm) Size:40mm Valve which includes the ratchetSchwalbe SV20 Extra Light Road Tubes are made from 20% recycled rubber, so not only are they low in weight, they're lower in their carbon footprint. All valves are nickel plated and threaded and valve inserts are replaceable. Specifications Fits Tyre Sizes: 700c x 18 25mm Valve Type: Presta Mfr Claimed Weight 65g Note: Sold as a single tube.