Weight for Derby Cars |Tungsten Spheres - Incrementally Adjust Weight - Fine Tuning

Tungsten spheres (also known as BBs), gives you maximum flexibility and precision weighing for your pine wood derby car.

• Tungsten is 1.7x denser than lead and 2.7x denser than zinc, so you can put more weight in a smaller area, exactly where you need it on your car to maximize inertia and speed to the finish line.
• Tungsten is non-toxic, child-safe for handling
• Package contains 33 BBs totaling a weight of 1 Ounce
• Diameter of each sphere is 4.5mm
• Each sphere weighs .032 oz (.9g)