No. 5 is a popular school and studio decorating wheel, the all-aluminum Amaco No. 5 Decorating Wheel is perfect for modeling, finishing or decorating. It can be used while decorating or  modeling moist clay. The No. 5 wheel is 7" in diameter, features concentric circles, rotates on a ball bearing for smooth turning, and is weighted at the rim for greater momentum. The wheel head can be removed from the base for easier cleaning.