Butyl rubber inner tube baby carriage tire accessories $ 5.42 specification: Pull Back City 121.50/1.75 US Pull Back City 121.95/2.125 US Pull Back City 141.50/1.75 US Pull Back City 141.95/2.125 US Pull Back City 161.50/1.75 US Pull Back City 161.95/2.125 US Pull Back City 181.50/1.75 US Pull Back City 181.95/2.125 US Pull Back City 201.50/1.75 US Pull Back City 201.95/2.125 US Pull Back City 221.95/2.125 US Pull Back City 241.5/1.75 US Pull Back City 241.95/2.125 US Pull Back City 261.50/1.75 US Pull Back City 261.95/2.12 US Pull Back City 241 3/8 US Pull Back City 261 3/8 US product description: Clean the inner side of the tire during installation to avoid any sharp objects remaining in the tire from puncturing the inner tire. Ensure that all the inner tire is put in the tire to pump air. Sharp tools are strictly prohibited during installation. The rubber of the inner tube is different in thickness, and the air nozzle will be thicker. The uneven expansion after inflating is normal. The inner tube can be used normally after installation. It is not a quality problem.
