AKA Racing SureGrip 17mm Wheel Nuts, and are intended for use with all 1/8 scale buggies and trucks that use standard 17mm hubs. These SureGrip wheel nuts are made from tough 7075 Aluminum and are hard anodized to add extra durability. The hard anodizing will help to keep the threads in the nuts from galling to the hub even after months of use. The rear face of the SureGrip features a heavy knurling that grabs the plastic on the wheel to prevent any loosening during use. These are truly a “set it and forget it” accessory. Once these lock to the wheel, they will not come loose.