Fits most 12inch wheel and vehicles, like e-Bike, Mini crosser, Mini dirt bike, Kids Motor Bike, Balance Bike Valve Stem: Has angled Stem TR87 This inner tube is made of isobutylene isoprene rubber, which is better in air tightness, elastic damping and aging resistance than natural rubber Brand new replacement 12inch 1/2 X 2 1/4inch (12.5 X 2.25)scooter inner tube. Known compatible models as following:FOR Pocket Mod, , , Bistro, Blossom, Chrissy, Daisy, , , Sweet Pea, Vapor ,And many gas and electric . size:12.5 inch Material:rubber colour:black Package Contents: 2 * Inner Tube Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/- 1-3cm.