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MAXIMUM VELOCITY! ®

Domed Adjustable Tungsten Round
3.65 to 4.0 ounces
Pinewood Derby Weight


Domed Adjustable Round
Bottom View
Bottom View

Product Content

One domed adjustable tungsten round and two, 1/4 inch tungsten cubes. Total weight of approximately 4.0 ounces.

Product Specifications

Diameter - 1 inch

Overall Thickness - 0.65 inch

Dome Height - 0.275 inch

Round Height - 0.375 inch

What is Tungsten?

Tungsten is a metal with one of the highest densities. Tungsten is 1.7 times more dense than lead, 2.4 times denser than steel, and 2.7 times denser than zinc.

Domed Adjustable round
Sample Car with Domed Adjustable Round Painted Orange
Car Thickness: 3/8 inch at back

How to Use this Product

A Domed Adjustable Tungsten Round can be easily used for pinewood derby car weighting if the weight of the car body, wheels, and axles is less than 1.35 ounces. Drill a 1-1/16 inch diameter hole into the bottom of the block. Then cut out the car. After painting, epoxy the round into the hole with the domed extending above the top of the car. Then, after the car is finished, add one or two tungsten cubes, and/or some tungsten putty as needed to fine tune the weight of the car.


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