A Complete Car Kit Solution! The Wing Kit Bundle includes all of the key items you need to build a competitive, BSA-compliant, derby car. The components include: – Wing Kit with precision-cut axle slots that match BSA specifications in placement, depth, and width (tungsten weight included) – Official BSA Matched Speed Wheels; Wheels outer diameter have been lathed concentric to the wheel bore – BSA Speed Axles; No crimp marks or flashing. – Max-V-Lube Graphite; The best pine derby graphite on the market. Please note: To complete the car kit, you will need some sandpaper, wood filler, and glue (epoxy or hot glue). Decals are not included in the bundles. For spray painting we recommend lacquer paints – avoid enamel paints. For brush painting (easiest for kids), we recommend acrylic hobby paints).