Excellent Seal: The heavy duty 4.80 4.00‑8 inner tube is crafted from premium rubber, and equipped with valve stem which has great sealing and air retention. Heavy Duty: Made of premium, thick, 100% rubber, this 4.80 4.00‑8 inner tube is heavy duty and long lasting, providing added comfort with its shock absorption, elasticity, anti aging, and puncture resistance.
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