The SmartPin system is comprised of of a SmartPin nut and R-Clip and in the distinctive golden colour. Once assembled, the Smart Pin reduces audible rattle, vibration and shunting of the Trailer Ball Mount in most driving conditions. Unlike other hitch pins on the market, our SmartPin can be used whilst towing as there is no risk of the bolt breaking. The superior coating protects from wind, rain and dust and the unique keyways pass through the tow bar and push the Trailer Ball Mount against the far edge of the hitch receiver, reducing free play. To ensure the best towing experience, regularly inspect for wear and check the tightness of the SmartPin nut.