Image Item No. Description By  4263  Technic, Plate 1 x 4 with Toothed Ends Catalog: Parts: Technic, Plate 3  4262  Technic, Plate 1 x 6 with Toothed Ends Catalog: Parts: Technic, Plate 4  3709b  Technic, Plate 2 x 4 with 3 Holes Catalog: Parts: Technic, Plate 1  32125  Technic, Plate Rotor 3 Blade with Smooth Ends and 6 Studs (Propeller) Catalog: Parts: Technic, Plate 3