Yamaha XTO OS 3-Blade SDS Propeller - 16" x 24" - 6GR-45932-20-00. High-Thrust Stainless Prop for Yamaha XTO Offshore V8 Engines. The Yamaha - XTO OS 3B SDS 16 x 24 - 6GR-45932-20-00 propeller is engineered specifically for Yamaha's XTO Offshore outboards. Featuring a 3-blade design and Yamaha's exclusive Shift Dampener System (SDS), this high-performance 16" x 24" stainless steel prop delivers exceptional acceleration, stability, and vibration reduction-making it a top-tier choice for offshore