This popular impeller serves a wide range of stirring applications, pairing the blade and shaft in a convenient package. This axial flow impeller is effective for high speed, low to medium viscosity mixing. The 2 ½ inch (65 mm) diameter­­ blade fixes to an 5/16 inch (8 mm) diameter shaft with included set screws. Blade and shaft are electropolished 316L stainless steel. For low shear, high top to bottom pumping capacity with high gas injection, able to vortex 19 L (5 gal) of water at 3600 rpm. This product replaces the Pitched Blade Propeller Model A160.