3.50-10 inner tube with bent valve stem. Fits tires with a 10" rim diameter. 3.50-10 is the classic tube and tire size for the many "Euro-scooters" from the 1960s through the '90s, such as Vespas and Lambrettas. It is also used on some currently made "retro-style" scooters like the Genuine Stella. ![]() | |