This product includes :M1.2x5 Philips Screw-16PCSM1.2 Lock Nuts-16PCSProduct major function & use:Scaler accessoryAuthentic design with quality aluminium for great durability and attraction.Suitable for Traxxas TRX-4 Scale and Trail Crawler with Land Rover / Defender Body model 82056-4NOT suitable for TRX4 Tactical device model 82066-4To install, the part has to be fixed with screws.