2 Pack Heavy Duty 20x4.0, 26x4.0, 20x3.0, 26x3.0 Inner Tube Set with Schrader Valve-Ideal for Mountain Bikes & E-Bikes with 20/26-Inch Fat Tires

heavy duty fat tube

• Designed for 20x4.0 Fat Tires Specifically built to fit 20x4.0 inch fat tire e-bikes and off-road bikes. Enjoy a perfect fit and a smooth, stable ride.
• Self-Sealing Protection Against Punctures Pre-installed with premium sealant that instantly seals punctures up to 3mm caused by thorns, glass, or sharp debris—so you can ride with confidence.
• Durable Butyl Rubber Construction Made from thick, high-quality butyl rubber for excellent air retention, durability, and shock absorption—ideal for heavy-duty electric fat tire use.
• Schrader Valve for Easy Inflation Equipped with a standard Schrader (American) valve, compatible with most bike pumps and air compressors—no adapters needed.
• Perfect for Commuting, Cruising, and Off-Roading Whether you’re riding to work, cruising the beach, or hitting the trails, this self-sealing tube keeps you protected mile after mile.