Package contents: you will receive 2 pieces bicycle tyre insert, which can hold two tires, compatible with 30 cm, 40.6 cm, 46 cm, 50.8 cm, 61 cm, 66 cm, 70 cm, 73.6 cm
Product size: the size of this bicycle inner tube is approx; 230 x 3.8 cm and the thickness is about 0.1 cm; please confirm the size of your bicycle tyres before purchase
Material: Our inner tubes are made of premium polyurethane, lightweight and reliable; you can use them for a long time with confidence
Practical design: the flat protector of the bicycle tube is easy to install, easy to measure and trim to stop blackberry, glass, blackbasins, nails and other trail debris from penetrating and puncturing pipes
Product function: this bicycle inner tube protects the bicycle inner tube from punctures caused by glass, thorns, nails and debris, thus extending the life of the tyre