This tire is used to replace the front or rear wheels of the Mijia M365 electric scooter. Rugged, no pump required, very convenient and durable.Designed for Mijia M365 Electric Scooter, front or rear application.Special rubber material with grooved surface for good abrasion resistance.Puncture-resistant, non-breathable, lightweight and durable, no need to draw water.Super flexibility and cushioning capabilities make the tires as strong as traditional fully pneumatic tires.Model: 8 1 / 2X2Colour:blackMaterial:rubberSize:21 x 21 x 5cmInner diameter: 145mm / 5.7inOuter diameter: 215mm / 8.5inPackage Contents:2 x tire4 x leverOnly 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.