Size & Material:①Diameter: 10 3/8"(in.)； Pitch: 13"(in.)；Blades: 3；Spline Tooth:10;Rotation:Right-Hand ② Material: Premium Alloy Aluminum and Improved blade；Color: Black; Identical to original OEM ones Ref Parts No. 48-19640A40 Fitments for：Propeller model:10 3/8 x 13.Fits for Mercury Engines 9.9/15/18/20/25HP（9.9-25HP）Choosing a proper propeller is critical to your vessel performance. Quality Assurance：Our products have undergone rigorous quality screening to make sure the propellers are extremely durable. A high-quality Propeller can help to guarantee the reduced engine wear off and improve the fuel efficiency. Easy installation: Using the new attributable hub kit to install the propeller，before repairing the propeller, be sure to switch the engine to neutral and turn off the ignition device.The whole process can be done within 10 minutes. Services：This Outboard Propeller comes complete with a warranty. If you have any problems，please feel free to contact us.We will reply you within 24 working hours. 10 3/8 x 13 (10 Spline Tooth) No.48-19640A40 Propeller