Innovative tire insert specifically designed for electric mountain bikes and the additional impacts and stresses associatedAdvanced material composition provides exceptional puncture resistance and impact protection, maintaining bike agility and responsivenessEffectively dampens shocks and vibrations, enhancing stability and comfort for both casual riders and professionalsExclusively compatible with tubeless tires and must be used with multiway tubeless valves (included)Each package includes one insert and a 40mm Vittoria Green Multiway Tubeless valve27.5x2.4-2.6SingleUPC/EAN/GTIN: 8022530035699