YunSCM 2 Pcs 28/29" Bike Tubes 28/29x2.125/2.40 (57/64 622) Bicycle Inner FV48mm Presta Valve Compatible with 28/29x2.125 28/29x2.20 28/29x2.25 28/29x2.30 28/29x2.35 28/29x2.40 Tyre

Compatible range: 28/29x2.125/2.4 FV48mm Presta valve bicycle inner tube for 28/29x 2.125 28/29x2.20 28/29x2.25 28/29x2.30 28/29x2.35 28/29x2.4 bike tyre tube High quality materials: Bicycle inner tubes are made of high quality butyl rubber. It has the advantages of good sealing performance, ozone resistance, aging resistance, shock absorption, electrical insulation and so on Note: The Presta spool of this inner tube is not removable Important: When replacing a bicycle inner tube, be sure to add a little air before installation. This makes it form, so it doesn't twist or bundle up, which can cause pinching. Check that the tire heads and rims on both sides are even Comfort and safety: After replacing the butyl rubber tube, it absorbs the impact on the uneven road surface, making the riding more comfortable and safe Tip: Before installing the inner tube, please put the inner tube into the water for inspection, if there are bubbles, it means that it has been damaged, you can contact us. Check the valve position to ensure that the installation direction is correct. Note: The inflatable inner tube should avoid puncture by sharp objects