Description: 【Anti slip nuts improve stability】: 1/8 1/7 RC Car Coupling is equipped with anti slip nuts, designed to be firmly fixed in place, reducing the risk of falling off when driving at high speeds 【Wider wheelbase, smoother ride】: RC Spare Parts has a widened wheelbase, which provides better stability and control, ensuring smoother and more reliable performance even at high speeds 【Decoration】: Replacement Part can be seamlessly match with the body shell of your vehicle to create an overall stylish appearance 【Cross model compatibility】: RC Model Vehicle Parts is specially designed to fit a range of models, including 1/8 Kraton Outcast   Typhon and 1/7 IBigRock Infraction Felony Limitless, making it a versatile choice for a variety of RC enthusiasts 【Aluminum alloy construction】: Wheel Seat Adapter is made of aluminum alloy to withstand rigorous use while maintaining its completeness for a long time Specification: Material:Aluminum Alloy Size Chart: 1.7cmx2.7cm/0.67inchx1.06inch Effective width increase: 10cm/3.94inch Package Includes: 4 RC Car Coupling Note: Please allow slight errors of 1-2cm differences due to manual measurement.