We offer aftermarket stainless steel propellers suitable for marine outboard engines from Honda, Yamaha, Johnson, Evinrude, Mercury, Mariner, Tohatsu, Parsun and Suzuki. Additionally, we have aluminum propellers compatible with Mercruiser, OMC, and Volvo Penta marine inboard engines. What does the marking on the propeller stand for? As an example, we´ll break down the meaning of 10¼ X 13 H3. 10¼ represents the diameter of the propeller in inches 13 represents the pitch (how many inches the propeller advances in one revolution) H3 indicates a right-rotating 3-blade propeller