This pre-shaped block of wood serves as the platform on which you will design and build your convertible style Wood Derby Car. Pre-cut wood with a fun, streamlined deisgn! Characteristics include short aerodynamic hood, short rear end with bumper, raised area as if it had roll bars. Accurately cut axle grooves. You may add a driver figure, spoiler, seat, canopy, steering wheel, decals, paint, or any other details to personalize your entry. Follow the enclosed instructions and use your imagination to make your Wood Derby Car special. 6- 1/8 in. L x 7/8 in. H x 1.75 in. W.