T-H Marine G-Force Eliminator Trolling Motor Prop Nut For Motorguide 

Designed to lessen prop noise and vibration, The Eliminator™ Prop Nut stabilizes the prop by providing a larger contact point. In addition, it acts as a heat sink and has built-in cooling ports that reduce the operating temperature for longer battery and trolling motor life.
Will not work with Kipawa and Hydrilla Hacker Props

Colors: Black or Blue, For: Motorguide