【About The Size】32mm (Regular valve). Fits 20" x3.5/4.0" Tire Tube.Tire Tools are Provided to Help You Change Tires More Easily
【Installation Instructions】It's 20x4.0 Fat Tire Tubes.Please Check the Side of Your Tire for The Inner Tube Size Your Bike Uses
【About Fat tire】Tires are a Great Accessory to Replace Worn or Old Fat Tire Tubes.The 20 inch Bike Tube Replacement is Made of High Quality Durable Rubber Material.Good Sealing Performance, Shock Absorption, Electrical Insulation. Our Fat tires are Specially Designed for Ebike/Mountain Bike.Installation is Quick and Easy.
【Before installation】When You Change a Bike Inner Tube, Pls Be Sure to Add a Little Air before Installing it. This Gives it Form So It Doesn't get Twisted or Bunch up.
【Perfect after-sales service】We Provide 1 month after-sales Service. If the Fat Tire Tubes has any Quality Problem within 1 Year, You can Get a New One by Contacting us.Thank You