To provide a wheel and an axis enabling a moving vehicle to easily overcome a height difference, a production cost to be lowered, a weight not to be increased, and a large space not to be required at a front, and having small diameters with a gradeability equal to that of large diameters, and a carriage, a cart, a wheelchair, a monocycle for load transport, and a suit case to which the wheels and axes are fitted.

A plurality of small wheels 2 are disposed on the outer peripheral part of a large wheel 1. The two small wheels 2 brought into contact with the ground adjacent to each other are used as running wheels.