Pinewood Pro Tungsten Sphere Weights for Derby Cars | 33 Piece Set | 4.5 mm in Diameter | Incrementally Adjust Weight | Great for fine Tuning |

Pinewood Pro Tungsten Sphere Weights for Derby Cars | 33 Piece Set | 4.5 mm in Diameter | Incrementally Adjust Weight | Great for fine Tuning |

Precision Weighting: This set of 33 spherical tungsten weights is excellent for fine-tuning the weight of your derby car. Reach the maximum allowed weight in 0.032 oz (0.9g) increments. Dense and Effective: The tungsten used in this 2 ounce set of twelve mini weights is 1.7x denser than lead, which means it’s also 1.7x smaller than lead. Plus, it’s 2.7x denser than zinc. Non-Toxic: These derby car weights are designed with tungsten that is safe for children and is non-toxic. Have peace of mind while letting young ones experiment with weight and placement. Speed Advantage: These tiny weights—4.5 mm in diameter—provide you with every opportunity for precise weight placement to achieve ultimate speed. A must for any derby car kit! Proven Winner: The materials in this tungsten weight set have been track tested and proven winners for over 15 years! Plus, they’re easy to use while building your car. Pinewood Pro’s Tungsten Spheres (also known as BBs) give you maximum flexibility and precision weighing when designing your derby car for Pinewood Derby racing. Pinewood Pro uses these exact weights when creating some of our pre-weighted car bodies. We find adding the weight in smaller increments is one of the best ways to dial in a perfect center of gravity.


Tungsten is 1.7x denser than lead and 2.7x denser than zinc. This makes it simple to put more weight in a smaller area, exactly where you need it on your pinewood derby car to maximize inertia and speed to the finish line.


Product Info:
Tungsten is non-toxic and child-safe for handling.
Each package contains 33 BBs, totaling a weight of 1 ounce.
The diameter of each sphere is 4.5 mm.
Each sphere weighs 0.032 ounces, or 0.9 grams.


Off the race track, these mini weights are perfect for use in crafts and other creative projects.


Note to metallurgists: These spheres are Class 3 tungsten, 95% pure. It is an alloy of 95% pure tungsten, 5% nickel and iron.


This product has been tested and passed appropriate CPSIA standards by an independent lab and has received a Children's Product Certificate (CPC).


Pinewood Pro is a US company that has proudly supported the derby car racing community for over 20 years.