Features: This series of rods develops visual discrimination of length, while height and width remain constant Eco-friendly wooden and handmade, no harm to kids The product could use at montessori kindergarten or homeuse for early learning development, or occupational therapy Nothing goes into the mind that does not first go through the hands Specifications: Color: Red Material: Wooden Size: 4.5-45cm/1.77"x17.72" Quantity: 1Set(10Pcs) Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-3cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1Set(10Pcs) x Educational Toy