NOT FOR HIGHWAY USE OR STATIC LOAD-BEARING. Do not operate continuously for more than 4 hours, as this may cause the tires to overheat and burst. 【Puncture-Proof & Inflate-Free】The 11x4.00-5 flat free tire and wheel is made of premium PU (polyurethane) foam with no inner tube, which has the features of high strength, good wear-resistance, and tear-resistance.
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