Hub / Module, Record and Play, 16 x 10 x 4 with Built-in Motors 4.5V

Technic Pin with Friction Ridges Lengthwise and Center Slots Brick 1 x 2 Plate 2 x 2 Plate 1 x 8 Technic Axle Pin with Friction Ridges Lengthwise Plate 2 x 4 Technic Axle 2 Notched Technic Brick 1 x 2 [1 Pin Hole] Technic Brick 1 x 10 [9 Pin Holes] Plate 2 x 8 Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]