The perfect companion to the 1/4" cubes, Tungsten Tuning Putty is a simple and effective way to fine tune your car's weight.  Incorporate a small weight pocket for the putty in your car's design and adjust the amount of putty in the pocket to make your ideal race weight.  Don't be the person by the scale with a drill or hobby knife trying to make weight!  Performance Pinewood suggests checking out our cube installation video on YouTube for details on how to install and fine-tune your car with tungsten putty.