To be able to adjust your dampers is likely to make a big difference on courses with several level modifications. These adjustable dampers have six 2.5g weights to permit you freedom within damper settings. The item also contains stainless screws, aluminum spacers and more! 2.5g Weight x6 2 x 25mm Stainless Steel Screw x3 2 x 30mm metal Screw x3 3mm Aluminum Spacer x2 Washers & Nuts may included. Suitable for Mini 4WD and Mini 4WD PRO vehicles. Some systems may require modification.