Features: Good performence: These pinewood tungsten weights are the ideal cushioning weights for your pinewood race car. By strategically positioning these weights you can effectively balance your vehicle, thereby increasing its speed and stability, which are key aspects of any competitive race. Creative design: These tungsten weights are designed specifically for derby cars. The wide range of sizes and quality tungsten material combined with the added graphite lubricant greatly improves the performance of your derby car. Specifications: Material: tungsten Size: 3.25 oz Package includes: 4 X 1/2 oz tungsten weight 3 X 1/4 oz tungsten weight 3 X 1/8 oz tungsten weight 2 X 1/16 oz tungsten weight 1 X 0.5 oz graphite powder Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.