Perfect Fit & Wide Compatibility. Fits 20x4.0, 20x4.5 fat bike tires with 32mm Schrader valve, widely compatible with fat tire mountain bikes, electric bikes, beach cruisers and snow bikes
Heavy Duty Thickened Butyl Rubber. Made of high-density thickened butyl rubber with great air tightness, anti-aging, shock absorption and explosion-proof performance, more stable than ordinary inner tubes
Complete Valve Repair Kit Included. Comes with 1 valve core wrench, 2 premium valve cores and 1 aluminum valve caps, convenient for daily replacement, maintenance and quick repair
Superior Puncture & Wear Resistance. Thickened structure provides excellent puncture resistance and wear resistance, effectively withstands friction and rough roads, extends service life and reduces maintenance cost
Installation Tip & After-sales Service. Please soak the inner tube in water before installation. If bubbles appear, it was damaged during shipping. Contact us immediately and we will send a new replacement