★Acupress★, a professional Amazon marketplace seller, was established to bring exciting quality brands to people through a variety of different solutions. We are passionate about excellence, so for every Acupress purchasing, you can expect to get the qualified products with really low cost and amazing after-sales service, no matter how big or small.
We also have several modern logistics centers in CA and NY!

Features
✎ The Inner Tube size is 8 1/2" x 2" (8.5 inch x 2 inch) 8.5"x2" inch tires/tubes are essentially the same size as 50/75-6.1 ✎ Compatible with popular brands, for Xiaomi Mijia M365, M365 Pro, for Bird, for Razor, for Spin, for Baby Stroller, for Roadster, Trike, for Bladez Rad2Go, for Inokim, for Z Scooter, for Power Rider... etc.
✎ Made of high quality material, sturdy and practical to use

Package Include:
✎ 2x 8.5 Inch Inner Tube