Constructed from an exclusive squeeze cast process, the aluminum Rubex 4 propeller has stronger blades with better performance. Rubex 4 provides boaters great acceleration and mid-range performance, including great stern lift and handling on the water. The prop also increases static thrust for heavy boats and maneuverability. Propeller and Hub Kit sold separately. This Rubex Propeller is the prop housing and blades only.• Prop Series D• Solas Rubex Part #: 9413-133-13• 4-Blade Aluminum• Diameter: 13.25"• Pitch: 13"• Standard right hand rotation Outstanding acceleration and great stern lift Hub kit required | Rubex 4 4-Blade Propeller, Exchangeable Hub / Aluminum, 13.25 dia x 13, RH