8.5x9 Propeller for Tohatsu Nissan Mercury Marine 2-Stroke 4-Stroke 8HP 9.8HP Outboard Motor 12 spline 3B2B645170 Size: 8.5"X9" Number of Blades: 3, Thru Hub Exhaust, Rubber Hub System Built In-REQUIRES NO HUB KIT Material: Aluminum Alloy, Color: Black Spline: 12, Fits 12 Tooth Spline Propeller shaft. Rotation: Right Hand rotation (Standard Clockwise Rotation), Hub: Included (Pressed-in)