KENDA Inner Tube 16" x 1.50/1.75 FVThe Kenda Inner Tube 16" x 1. 50 1. 75 FV is a common inner tube size for kids' bikes and smaller adult bikes like folding bikes. Key features: Size: This tube fits 16 inch wheels with tire widths ranging from 1. 50 to 1. 75 inches. This is a very common size for children's bikes, so it's a good option if your child needs a replacement tube. Valve: It uses a Presta valve (FV). As mentioned before, Presta valves are known for being more lightweight and