The large ear blade design of the Rubex NS3 is ideal for pontoons, commercial, and heavy boats. The NS3 offers all-around performance with good acceleration. Constructed from high chromium stainless steel for long-lasting use. Prop Series EVendor Part Number: 9531-140-19Propeller and Hub Kit sold separately. This Rubex Propeller is the prop housing and blades only. Outstanding acceleration Hub kit required | Rubex NS3 3-Blade Prop, Exchangeable Hub / SS, 14 dia x 19, RH