High-speed kit is designed for obtaining the best performance possible from your wheels and axles. Allows you to mount the wheels on an electric drill and use the medium grit sandpaper included for smoothing. The two finest grits of sandpaper can be used wet or dry to polish imperfections from axles and smooth the shaft of axle for top performance.
WARNING: Choking hazard. Small parts. Not for children under 3 years.
Compact, portable scale is handy during design phase but is an essential tool for conducting a smooth and fair race on derby day. Stylish in design and color; accurate digital scale displays in pounds, ounces, or grams with an 11 lb. capacity and tare feature. Operates on 2AA batteries (included) and has auto shut-off for longer battery life. Includes easy-to-use operation manual. Other uses include home office and kitchen applications. Learn More