2 Pack 18" Bike Tubes 18 x 2.125/2.25/2.35/2.4 AV32mm Schrader Valve 18" Bicycle Tubes Compatible with 18 x 2.125 18 x 2.20 18 x 2.25 18 x 2.30 18 x 2.35 18 x 2.40 Bike Tire Tubes - YunSCM2021041001, YunSCM2021041001

• UPC   750139075669
• 18X2.125/2.4 inch kids bike replacement inner tubes. Weight-230g 【High Quality】 The bike tube is made from premium butyl rubber.It has the advantages of good sealing performance, ozone resistance, aging resistance, shock absorption, electrical insulation. 【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】When changing a bicycle inner tube, be sure to add a little air before installing it. This gives it form so it doesn't get twisted or bunch up which may cause a pinch flat. Inspect for an even bead of the tire to the rim on both sides. 【Comfortable and Safe】After replacing the butyl rubber tube, it absorbs the impact on the uneven road surface, making riding more comfortable and safe. Including inner tubes for kids' and adult bikes. With an expandable width that can accommodate 2.125-inch, 2.25-inch, 2.35-inch 2.4 inch tires, these inner tubes can withstand a lot, from rough riding to the changing seasons.