. This replacement propeller works with the Cruise R and T models with 2009 and newer with serial numbers greater than 5000. Designed to operate at slower speed with higher thrust. Made with high-impact resistant glass fiber PBT. Diameter is 11 13/16" (300mm).Prop is designed for a max shaft power (p) of 4000 Watts with a velocity (v) of vessel of 19 kph at that power valueWorks with Cruise R and T models with serial numbers higher than 5000Maximizes Torqeedo motor's thrustMaterials: High-impact resistant glass fiber PBTIncludes nuts, disc springs and shear pin