Schwalbe standard bicycle tube No. 1. For bicycle tires in size 12" inches (ETRTO 47/62-203). Retains air for an above-average time. Thanks to the best material quality and uniform wall thickness. Highest reliability that has proven itself millions of times.
Matching dimensions (ETRTO)
47-203 12 1/2 x 1.75
54-203 12 x 2.10
62-203 12 1/2 x 2 1/4
Weight 80g