Jabsco Impeller Kit - 9 Blade - Nitrile - 3-3/4" Diameter x 2-1/2" W, 1" Shaft DiameterImpeller Kit 9 Blade Nitrile 3 3 4" Diameter x 2 1 2" W, 1" Shaft Diamter Features: Material: Nitrile Drive Type: Single Flat Drive Number of Blades: 9 Dimensions: Diameter: 3 3 4", Shaft Diameter: 1", Shaft Width: 2 1 2" Insert Material: Brass Jabsco flexible impellers can be fitted to most makes and models of bronze flexible impeller engine cooling, bilge, transfer and general purpose pumps. Jabsco flexible impellers are subjected to rigorous