knobed cylinders montessori school material educational baby children wooden toysthere are 4 blocks per set,each block has 10 cylinders.the cylinder size are 1,1.5,2,2.5,3,3.5,4,4.5,5,5.5cmYou can have an idea about the size. beech wood and bass wood are same size ,just different wood. beech wood one is heavier and harder,price is..