10x2.125 inner tube for roadster tricycle, 10 inch bike, 3 Wheel Trikes and Baby Strollers, 10 inch Wheel Electric Scooter, Gas Scooters and Mobility Scooters This inner tube is made of isobutylene isoprene rubber, which is better in air tightness, elastic damping and aging resistance than natural rubber. NOT recap, Totally brandnew Inflatable inner tube with 90 bent angle valve stem and a cap; Guarantee Specification Material: Rubber color:black Measurement: 10x2.125 Feature: Inflatable Valve: 90 Bent angle valve Package Contents: 2 * Inner Tubes 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.