The Schwalbe Tube No.21 fits 27.5" (or 26") tires with a width of 40-62 mm and is used in mountain bikes.

Due to their excellent manufacturing, Schwalbe tubes have proven themselves in the market for many years. They are uniform in wall thickness and round in shape. Their precise assembly makes them durable at the seam. A comparison test showed that the Schwalbe tube maintains air pressure significantly longer than other tubes (the latter lost almost twice as much air pressure in 30 days as the Schwalbe tube). One possible reason for this could be a lower butyl content in the other tubes. The special quality of Schwalbe tubes comes from the uniqueness of their rubber mixture. To ensure this high quality, each individual Schwalbe tube is inflated and checked for at least 24 hours before leaving the factory.

Features:

• Butyl rubber ensures double the air retention
• 24-hour test for each tube
• High elasticity allows for coverage of many tire sizes per tube
• Recycling process achieves very good energy balance

Suitable for tire sizes:

40-584 | 26 x 1 5/8 x 1 1/2 | 650 x 38B
40-584 | 27.5 x 1.50 | 650 x 38B
40-584 | 27.5 x 1.50 | 650B
42-584 | 27.5 x 1.60 | 650B
44-584 | 26 x 1 5/8 | 650 x1/2B
44-584 | 26 x 1 5/8 x 1 2/2 | 650 x 42B
44-584 | 26 x 1 1/2 x 1 5/8 | 650 x 42B
44-584 | 27.5 x 1.65 | 650 x 42B
44-584 | 27.5 x 1.65 | 650B
47-584 | 27.5 x 1.75 | 650 x 45B
47-584 | 27.5 x 1.75 | 650B
50-584 | 27.5 x 2.00 | 650B
54-584 | 26 x 1 1/2 x 2
54-584 | 27.5 x 2.10 | 650B
57-584 | 27.5 x 2.25 | 650B
60-584 | 27.5 x 2.35 | 650B
62-584 | 27.5 x 2.40 | 650B

Valves:

• AV = Auto, Schrader
• DV = Dunlop, Blitz, German valve
• SV = Sclaverand, Presta, French valve (40 mm)

Scope of delivery:

• 1 x Schwalbe Tube No.21
  including valve