Designed for use by one or two children, these units promote the learning of body control and coordination. The platforms are made from 7 gauge safety plate with 2" perimeters rolled on 1/2" radii. Zerk lubricated ball bearings and 3-1/2" oil impregnated bronze sleeve bearings provide smooth, effortless revolving motion on 2-1/4" cold-rolled steel shaft. Platform is 24" diameter. Powder coated as shown, or in your choice of standard colors.