Product Specifications: Materials: The strongest marine and chemical corrosion resistant metal alloy and scientifically engineered high performance neoprene rubber.. Impeller weight: Apprx. 140g Number of Blades: 12 External Diameter: 57.00 MM / 2.24 Inch, Internal Diameter: 16.00 MM / 0.63 Inch, Shaft Depth: 48.20 MM / 1.90 Inch Drive type: Spline Drive .
eBay