Plate Special 1 x 4 with Towball Socket, Short, 4 Slots

Plate 1 x 2 Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Arm Mechanical with Clip [Thin Support] Tile Special 1 x 2 Grille with Bottom Groove Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Plate 2 x 2 Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Plate 1 x 4 Technic Wedge Belt Wheel [aka Pulley] Technic Pin 1/2 without Friction Ridges Cone 1 x 1 [Top Groove] Technic Pin 1/2 with 2L Bar Extension