Schwalbe Tube SV6. Reliable, high quality and very air tight inner tubes from Germany's number one manufacturer. All valves are nickel plated and valve inserts are replaceable.

20x1-1/8 (28-406)

20x1-1/4 (32-406)

20x1.35 (35-406)

20x1-3/8 (37-406)

20x1.50 (40-406)

Weight: 95g, Stem length: 40mm