SAFE QUALITY: Our Tungsten is made of safe material, cylindrical without sharp edge, child-safe and non-toxic, its pretty nice for children to operate
DIFFERENT SIZE: 4 pieces of 1/2 ounce, 2 pieces of 1/4 ounce, 4 pieces of 1/8 ounce, 4 pieces of 1/16 ounce. Total 3.25 ounce. 14 pieces multiple size that could satisfy the racing speed you want to enhance
HIGH-DENSITY: Our Tungsten is of 99.95% purity, 1.7 times higher than lead density, which means it can increase more potential energy, leading to maximum kinetic energy at the end of the race
EASY INSTALLATION: Tungsten weights are 3/8inch in diameter, standard size that they could fit most of derby car. You can drill a hole, put these cylinders slide easily into your drill holes
CONVENIENT TO STORAGE: The Tungsten set comes in a plastic box, reusable and easy for you to carry around