Pack Of 10 Inner Tube 4.10/3.50-4 Bent Valve Trolley Scooter WheelbarrowA high quality inner tube, size 4. 10 3. 50 4 For tyres commonly found on trolleys, sack barrows, mobility scooters, quad bikes etc. The tube has an angled valve fitted complete with dust cap. The code on this inner tube means it fits a 10 diameter tyre with an approximate width of 4. 10 inches, a sidewall height of approximately 3. 50 inches and fits onto a rim with a 4 inch diameter.