I received this as a gift a year ago, but I don't have much opportunity to use it because my house is small, so I'm selling it. >_< The hexagonal screw to adjust the height is not included. The wooden pushcart comes with colorful blocks, helping to develop motor skills while playing. - Type: Pushcart - Material: Wood - Colors: Blue, Green, Red, Yellow - Shapes: Cubes, Cylinders Thank you for looking.