Globe/Barco Impellers Economical impellers. Sturdy, will live if run dry for 15 minutes. When selecting your impeller, be sure to check: 1)Drive Type, 2) Number of Blades, 3)Height, 4)Width, 5) Shaft Diameter Drive: Ding Drive Keyway, #Of Blades: 9, Height: 3-3/4", Width: 2-1/2", Shaft Dia: 1"