Ruisita 3 Ounces Tungsten Weights Cubes Polished Speed Axles Kit 18 Pieces Tungsten Weights Cubes and 4 Pieces Polished Speed Axles

The winner of a handcrafted wooden toy car race uses a tungsten weight cube that weighs 1.7 times more than lead, allowing you to add more weight in the back of the car which leads to the greater potential energy accumulation and increases your speed on the track and finish line Package content: each package comes with 18 pieces of tungsten weights cubes, 1/6 ounce each, a total of 3 ounces; 4 pieces of groove axles, and plus 1 transparent storage box, sufficient quantity can meet your various needs Reduced friction: axle is made of stainless steel, which is smooth in surface; the axle designed with 2 grooves for the purpose of st