Inner tube 12 1/2 x 2.1/4 with 45° Schrader valve 40mm for reliable inflation and air retention.
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Inner tube for 12 1/2 x 2.1/4 wheels designed to provide reliable air retention and easy inflation. Suitable for maintenance or replacement on compatible bikes.
The 40 mm Schrader valve angled at 45° improves access for inflation and ensures durable air retention for wheels matching ETRTO 47/62-203.
