This POLASTORM PROPELLER 8.5 X 8.5 is a must-have for your boating adventures with its impressive features. Designed for engines including MERCURY/TOHATSU 8-9.9HP and Hidea 9.8hp, this propeller is made from high-quality aluminium material that guarantees durability and longevity. Equipped with a pressed-in rubber hub, this propeller ensures smooth and efficient operation while minimizing vibrations for better performance on the water. It has a gearcase size of 2-1/2" and an engine shaft with12 tooth spline, making it compatible with OEM installations without any modifications needed. This POLASTORM PROPELLER comes in pack of one so you can easily replace your existing one or keep it as a spare during long boating trips without any hassle or worries about running out of spare parts. Upgrade your boating experience today by getting the POLASTORM PROPELLER - an essential tool to maximize your boat's performance and efficiency on the water!