Vehicle, Base 4 x 8 x 1 1/3

Vehicle, Base 6 x 10 x 1 with 2 x 4 Recessed Center and 2 Holes

Vehicle, Base 6 x 12 x 2 Trailer with Mudguards and 4 x 10 Recessed Center

Vehicle, Base 4 x 10 x 2/3 with 2 x 2 Recessed Center with Smooth Underside, No Center Hole

Vehicle, Trailer Base 6 x 16 x 2 2/3 with 8 Holes

Vehicle, Base 4 x 7 x 1 Triple Inverted Slope with Wedge Plate and 3 Axle Holes

Vehicle, Base 4 x 6 Racer Base with Red Wheels and Light Gray Bumper

Vehicle, Base 6 x 16 x 2/3 with 4 x 4 Recessed Center and 4 Holes

Vehicle, Trailer Base 4 x 13 with Tow Ball