O-ring dampens noise/vibration and holds the nut in place. Stabilizes the propeller by providing a larger contact point. Trolling motor black prop nut of the traction machine lessens the noise and vibration of the propeller.<br>Replacement of the support nuts and washers provides smoother, quieter, flex-free operation and reduces wear and tear on the trolling motor and battery. Additionally, it acts as a heatsink with built-in cooling ports to lower operating temperatures and extend battery life.<br>Trolling motor black prop nut is machined from 6061 billet aluminum with anodized protection for durability. Trolling black prop nut built-in cooling port reduces the operating temperature and extends the life of the battery and tractor.<br>Easy to install: no tools required. Easy-to-grip knurled edges. O-rings stabilize the propeller by providing a larger point of contact. Reduce propeller noise and vibration.<br>Remove the existing propeller nut and washer. Hand-tighten the eliminator so that it fits snugly against the propeller face. Note: There is a spacer on the back of the eliminator that expand over time, so be sure not to overtighten it.<br><br>Material: Made of high-quality aluminum billet with black anodized treatment, rust-proof and longer service life.<br>Application:<br>Compatible with:for GFEL-MG--DP <br>Trolling motor black prop nut Compatible with Trolling Motor GFEL-MG-R-DP.(NOTE: not work with for and for Hydrilla Hacker Props.)<br>Colour:Black<br>Material:aluminum<br><br>Package Contents:<br>1 * Eliminator Trolling Motor Prop Nut<br><br>Only the above package content, other products are not included.<br>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.