Knobless Cylinders, Set of 4

The Knobless Cylinders invite the child to experience variations in height & width, & are designed to help improve coordination, concentration, independence, & problem solving skills through observation. There are 4 sets of 10 cylinders varying in height &/or diameter in each set. Each set is in a separate wooden box with a lid painted the same colour as the cylinders; red, green, yellow, blue.