With 2pcs levers, fat tire tube are used to remove and install the bike inner tubes to prevent from being caught by the tireand and without damaging rim.Butyl rubber,better air tightness, durable and shock absorption. No bumps will be felt, bike tube adds comfort to your child's riding. Must get this inner tube for spare or fixing flat!Strong wear resistance, not easy to break and deform during use. The inflation port has a protective cover, the gas in the fat bike tube is not easy to leak. Thicker than others you have!Colour:blackMaterial:Butyl rubbertype:20X4.0Package Contents:2 x Bike Inner Tubes2 x Tire LeversOnly the above package content, other products are not included.Note: Light reflection 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.