8 1/2 x 2 Inner Tube: The 8.5 x 2” size is also referred to as 50/75-6.1. With straight valve. Choose the right rim sizes before ordering, otherwise it will not fit
Heavy Duty Inner Tube: Made of butyl rubber, has high air tightness and puncture resistance, reducing the possibility of air leakage, more durable and less likely to experience air leakage
Compatibility: The 8-1/2 x 2 inner tube is compatible with Xiaomi M365/M365 Pro, GOTRAX GXL V2/XR/Apex/Apex LE/Apex XL/G2/G3/GXL/GXL V2/XR Elite/XR Ultra, Hiboy S2/S2R, Bird M365, Lyft Electric Scooter, Spin Electric Scooter and other scooters with 8.5 x 2” tire
Upgraded Thicker Rubber: Our inner tubes are at 2.0m in thickness, thicker than other inner tubes in the market
Installation Tips: Before inserting the new tube, make sure to check for sharp/pointed objects inside or embedded in the tire, that could puncture the tube. Inflate the tube to the recommended PSI (usually found on the tire's sidewall). Underinflation could cause pinch flats and cause the tire to slip on the rim resulting in the valve stem separating from the tube