Mercury - Flo-Torq SSR Solid Propeller Hub Kit High-Performance Prop System Precision Marine Construction 8M0101604. Overview. There is a moment every boater knows-the instant the prop bites, the boat lifts, and the whole hull comes alive. When that moment feels clean and controlled instead of jarring, the rest of the day on the water just seems to fall into place. That is exactly the kind of confidence the Quicksilver Flo-Torq SSR Solid Propeller Hub Kit 8M0101604 brings. It smooths out the rou