The Scent-A-Wheel device consists of several different parts connected
together to form a device that acts like a carousel. The device consists
of a hub (ball bearing or axle design), arms attached to the hub
("spokes"), a two-piece, adjustable shaft to support that hub and arms,
and a base of four "legs" to provide stability and support. A ball
bearing within the hub allows the hub and arms to turn on the base.