Durable 15-5 ph one piece stainless steel casting
High-rake, progressive pitch configuration
Bestoverall performance at all throttle levels
The unique high-rake, progressive pitch configuration is designed to help most boats achieve their best overall performance at all throttle levels; low end, mid-range and top end. Manufactured using a durable 15-5 ph one piece stainless steel casting, then polished to a gleaming mirror-like finish. They are backed by a limited lifetime blade failure warranty. Your prop is one of the essential links between your boat and the water. Carefully choose the prop that will best suit your application.Mercury/Mariner/Force O/B All V-6 O/B's except Mariner Magnum II, and Mercury XR-4 series.Mercruiser Sterndrive: All Mercruiser I, Alpha I, and Bravo I sterndrives. For the Stiletto propellers above with the first digits of "ST103 and ST104" use Quicksilver #13171 thrust washer (Overton's part #24220)Important: These recommendations are for single engine installations only. For most twin engine installations, it is necessary to increase the pitch by 4"Warning: Due to the performance enhancing nature of the design, Quicksilver Trim Tab No. 46399A1 or AP 4004 (Overton's part #38459) MUST be used to avoid damage and/or injury.Exception:With Mariner Magnum II and Mercury XR-4 outboards, use Quicksilver Anode Plate No.15300 or equivalent.Note:1997 and newer Mercury/Mariner O/B with 150hp plus or any Mercruiser I/O will need an aft washer (Overton's part #23395) for proper installation.