Pinewood Pro 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)
Note to metallurgists: These spheres are Class 3 tungsten, 95% pure. It is an alloy of 95% pure tungsten, 5% nickel and iron.
TitlePinewood Pro weight for Derby Cars |Tungsten Spheres - Incrementally Adjust Weight - Fine Tuning
