Wheel Hard Plastic with Small Cleats

Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Brick Special 1 x 4 with 4 Studs on One Side Technic Wishbone Suspension Arm 9L Brick Arch 8 x 1 x 1 2/3 Curved Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Plate 1 x 2 Technic Axle Pin without Friction Ridges Lengthwise Technic Axle 3 Brick Curved 1 x 2 x 1 1/3 with Curved Top Brick Curved 4 x 1 No Studs [Stud Holder with Asymmetric Ridges] Wedge Plate 3 x 3 Cut Corner Technic Pin with Friction Ridges Lengthwise and Center Slots