Mercury – Flo-Torq SSR Solid Propeller Hub Kit | High-Performance Prop System | Precision Marine Construction | 8M0101604Mercury Flo Torq SSR Solid Propeller Hub Kit High Performance Prop System Precision Marine Construction 8M0101604 Overview There is a moment every boater knowsthe 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