I have a new (used for 1 hour to test) powertech nrs3 13.25x16 Pitch SS prop.
I bought it for my Tohatsu 90hp TLDI engine but I need another size. It has 15 spline and wil probably fit other engines, but I am not 100% sure of that.
No they don't exchange here, and the prop runs ok and the engine runs between the recomended rpm's but I would like to gain some more rpm's so it's more my choice to get anotherone.