Boat Engine Impeller 3C8650212M 3C8-65021-2 3C8650210M 18-8922 for Tohatsu Nissan 40HP 50HP 2-Stroke Outboard Motor 3C8-65021-1M Number of Blades: 6, Plastic Hub Height: 20.00mm External Impeller Overall Diameter: 50.00mm Internal Shaft Insert Diameter: 17.00mm Net Weight: 15g A External Impeller Overall Diameter: 50.00 mm B Height: 20.00 mm C Internal Shaft Insert Diameter : 17.00 mm Net Weight: 15 g Plastic Hub Number of Blades: 6