To choose your propeller, we kindly advise you to confirm your own propeller's :(1) brand, (2) diameter, (3) pitch, (4) rotation, (5) OEM number, (6) the engine date to be matched by the propeller and (7) HP from the manufacturer before the purchase. A boat needs a lot of parts to steer on the water and there is no doubt that a good quality durable propeller is the most important part! Made of high quality aluminum material, durable and practical. Light weight and portable to carry. Convenient installation. This is a durable outboard propeller with good performance. directly replace your old one or broken one. · Size:15x15,14.8x17,14.25x19,15.5x17 · Fit Mercury Engines,115-250 HP,15 Tooth Splines · Strong aluminum alloy material · Powerful thrust & driving stability · Easy to install and replace with disassembly · For all products,We will conduct quality check and performance test before delivery!