Description: - Montessori cylinders set of colorful cylinders with different diameter and height - The purpose of this material is to develop child's visual perception of dimension - learn about the concept of numbers and color easily - Color: yellow, blue, red and green - Material: WoodSize Chart:Diameter: .5 cm/ 1.37-2.17 inchHeight: .5 cm/ 1.37-2.17 inchPackage Includes:1 x Montessori Toy:Due to the manual measurement, please allow 1-2mm differences in size.Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand