2-Pack 20x4.0 Fat Bike Tyre Tubes, Heavy Duty E-Bike Inner Tubes with 30mm Valve, Butyl Rubber MTB Inner Tubes for Bicycle

• BUTYL GUM MATERIAL: This mountain bike inner tube is made of high-quality butyl gum material with excellent elasticity and abrasion resistance, which effectively prevents the inner tube from leaking and ensures your stability and safety during riding.
• PERFECT FIT: The size of this inner tube is 20 x 4.0 inches, which provides you with a perfect fit and ensures a tight fit between the tire and the inner tube to enhance your riding experience.
• 2 PIECE SET: Each set contains 2 inner tubes, providing you with more spare options. Whether it's for daily replacement or emergency spare, it can meet your needs and make your riding more carefree.
• CONVENIENT INFLATABILITY: This inner tube is equipped with a 30mm long valve, which makes it easy for you to inflate it with various types of pumps. The longer valve design makes the inflation process easier and more convenient, no need to worry about the inconvenience caused by the short valve.
• ABRASION RESISTANT DESIGN: The inner tube is designed to be abrasion resistant and maintain good performance during long rides. Whether it's a rugged mountain road or a rough city road, this inner tube can effectively resist abrasion and puncture.

Specifications: Material: Butyl rubber Quantity: 2 Color: Black Size: 20 x 4.0 Features: 1. Butyl rubber material, wear-resistant 2. 2PCS package, replace front and rear tires at one time 3. 30mm valve nozzle, easy to inflate. Package List: 2 x Fat Bike Tyre Tube