Our tungsten cubes and putty are great non-toxic, high-density weights that are perfect for tuning your derby car weight and center of gravity. Drill a hole to hide the cubes right where you need the weight, top with putty, sand, and paint to keep your car looking smooth with clean lines and a hidden secret weapon. Or, just glue them in place and your car will be just as fast! Finish your car’s tune up with some of our tungsten putty on race day with the official scales to hit just the right weight and find the perfect balance for the fastest possible car. Tungsten is similar to lead, but non-toxic and 1.7 times more dense. And, it’s 2.7 times more dense than zinc, which some sell as a non-toxic alternative to lead! That means that you can hide the tungsten wherever you want and keep your car looking great. Each resealable package comes with 3 ounces of tungsten weights in total; 2 ounces of tungsten cubes, 12 – 1/6 oz. pieces and 1 oz. of pliable putty. The cubes are sized at 1/4″ so that you can easily drill a hole to conceal them inside your car. Our Guarantee If you’re not happy with your tungsten weights, just let us know, and we’ll give your money back. We would rather do the right thing and have a happy customer than keep your money.