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IMPROVE SPEED AND PERFORMANCE The 700 bike inner tube weighs only 1 ounce, much lighter and more compact than the normal 150g rubber hose. This reduces the weight of the tyres and thus the rolling resistance where the goratoria load has the greatest impact (wheelsets), thus improving speed and performance. In addition, it is much easier to store and transport as it takes up much less space ULTRA LIGHTWEIGHT & STURDY The ultra-light road bike tubes are made of TPU material, which greatly improves durability compared to conventional rubber tubes. The TPU material improves puncture resistance, is safe and not easy to burst. In addition, it is oil and waterproof and has excellent load capacity and impact resistance COMPATIBILITY The bicycle inner tube fits the 28 inch 700C road bike model. It is compatible with many tyre sizes: 18/23/25/28 30/32c. Length of French valve (Presta): 45/65/80 mm Installation: Remove the wheel and remove the damaged camera. Unfold the new 700 hose and inflate it up to 30% of its capacity so that it can take its shape and fit more easily (should not be inflated more than 6 PSI before installation). Insert the valve in place and slide the rest of the valve into the tire. Then attach the cover back to the wheel. Insert the valve cap and inflate the tyre to the pressure recommended for a road bike. Finally, put the wheel back on the axle and make sure the derailleur and rear chain are reattached 100% GUARANTEE Our customers' satisfaction is our top priority. If you have any doubts, problems or are not satisfied with the product, email us and we will help you solve it as soon as possible › See more product details; Product description IMPALAPRO 700 x 18-32C Road Bike Inner Tube Ultra Light 28g Presta Valve 45/65/85mm 700 Tube for Road Bike 700; Product description IMPALAPRO 700 x 18-32C Road Bike Inner Tube Ultra Light 28g Presta Valve 45/65/85mm 700 Tube for Road Bike 700; IMPALAPRO 700 x 18-32C Road Bike Inner Tube Ultra Light 28g Presta Valve 45/65/85mm 700 Tube for Road Bike 700