Image Item No. Description By  47454  Technic, Brick Modified 2 x 3 with Pin Holes, Rotation Joint Ball Half Horizontal, and Rotation Joint Socket Catalog: Parts: Technic, Brick 4  47432  Technic, Brick Modified 2 x 3 with Pin Holes, Rotation Joint Ball Half Vertical, and Rotation Joint Socket Catalog: Parts: Technic, Brick 5  18585  Technic, Brick Modified 2 x 4 with Pin Holes and Flywheel Socket (Ninjago Airjitzu Flyer Handle) Catalog: Parts: Technic, Brick 1