Yamaha's high-performance aluminum propeller with Shift Dampener System (SDSTM) designed specifically for Yamaha mid-range outboards. The Talon features all-new blade architecture that is perfect for pontoon, walleye, deep V and fiberglass boats, and a new, replaceable SDS hub that requires no special hardware for operation. High-efficiency, low slip design, 13 - 1/2 diameter and available in several pitches. These props are for engines with a 4.25" gearcase, "K" series.