5 sharp colors tandem wooden boards(325 x 550mm) with a pair of symetric milled patterns on each board. The mirrored milled figures with shift buttons can train left and right half brain. Best for childern (age 4 - 7) to acquire the writing learning process, fine motor skill, eye-hand coordination and concentration.Contents in set:5 wooden plates with different patterns10 sliding knobs1 wooden box with sliding lid(325 x 550 x 75 mm)