Not only does it look cool, the larger contact point of T-H Marines G-Force Eliminator MotorGuide Prop Nut reduces the vibration and noise of your trolling motor by acting as a harmonic dampener on the prop shaft. The machined 6061 billet aluminum also serves as a heat sink, keeping your trolling motor cooler, thus improving battery life and the life of the motor. Colors: Black, Red. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Prop Nuts.