NATGAI 2 Pack 18x8.50-8 18x9.50-8 Inner Tubes, Replacement Tire Tube with TR-13 Straight Valve Stem, Fits Lawn Mowers, Yard Tractors, Go Karts, Golf Carts, ATVs, Wheelbarrows, Hand Trucks

• Heavy-Duty Butyl Rubber: Made from thick, premium-grade butyl rubber, these inner tubes are 4X more durable than standard tubes. They resist punctures, absorb shocks, and provide long-lasting performance—even under rugged terrain and heavy loads.
• Excellent Air Retention & Leak Protection: Our 18x8.50-8 18x9.50-8 inner tubes are engineered for airtight performance to reduce the need for frequent reinflation. Reinforced TR-13 straight valve stems ensure secure inflation and help prevent tearing, even during bumpy rides or high-pressure use.
• Quick & Easy Installation: Installing these lawn mower inner tubes takes just minutes—no special tools needed. Whether you're replacing old tubes in your mower or prepping your ATV for a weekend adventure, NATGAI inner tubes get you back on the move fast.
• Wide Compatibility: Designed to fit 18x6.50-8 |18x7.50-8 | 18x8.50-8 | 18x9.50-8 | 20x8.00-8 | 20x10.00-8 tire sizes, our inner tubes are perfect replacements for lawn mowers, yard tractors, go-karts, golf carts, ATVs, wheelbarrows, hand trucks, wagons, and more. A must-have for homeowners, landscapers, and outdoor enthusiasts alike.
• Complete 2-Pack Set with Valve Caps: Each package includes two 18x8.5/9.5 -8 inner tubes and two dust-proof valve caps—everything you need for quick replacements or keeping spares on hand. Neatly boxed for easy storage in your garage, shed, or trailer.

Features: Heavy-Duty Butyl Rubber: Offers superior air retention, flexibility, and puncture resistance compared to standard rubber. Shock-Absorbing Design: Helps reduce vibrations and improves ride comfort on uneven surfaces. Weather-Resistant Performance: Built to perform in hot, cold, and wet conditions without cracking or leaking. Universal Fit: Compatible with a wide variety of machines—perfect for homeowners, landscapers, and DIYers alike. Neatly Packaged: Comes in a compact box with two inner tubes and two valve caps for convenient storage and easy access. Specifications Model: 18x8.50-8 18x9.50-8 Inner Tube Quantity: 2 Inner Tubes + 2 Valve Caps Material: High-Quality Butyl Rubber Valve Type: TR-13 Straight Valve Stem Tire Compatibility: Fits 18x8.50-8 18x9.50-8, and similar tire sizes Outer Tire Diameter: 18" to 18.5" Tire Width: 8.5" to 9.5" Rim Diameter: 8"