【Product Specifications:】This bike tire tube fits 700c tires with 48mm to 53mm diameter. So, this tube can fit 40-622 700x38c and 700x40c bike tube 28" x 1-3/8" 1-5/8"
【High Quality】Our bike inner tubes are made of high quality butyl rubber material. Better air tightness, heat resistance, and durable. Suitable for most of bicycles wheels
【Easy Installation】Installation is quick and easy. Please follow inflation guide when airing a tire from a complete flat. Save time and effort, replace the old tube in a few minutes.
【Important Note】Make sure inner tube match with the size of tire; Inflate a little air before installment, to avoid crack or damage during installment; Install the valve correctly, which must be 90° with steel, and the nut must be well locked; After installment, please check the tube is at the right position between steel and tire, make sure the tubes are not clamped by them; Then inflate the air according to pressure standard of tire
【Comfortable and Safe】After replacing the butyl rubber tube, it absorbs the impact on the uneven road surface, making riding more comfortable and safe.
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