3 Blade Stainless steel propeller, 15 pitch for Mercury products. Was used on Mercruiser Alpha I Outdrive but will also work on certain Mercury and Mariner outboards. See pictures for part numbers and condition. The boat it was on come stock with a 17 pitch aluminum. After putting on this 15 pitch the boat had more pull on the start/take off but lost some top end. Prop is in very good shape an never been repaired. Asking 70.00 obo Call Don at 801-644-0669