Impeller/Propeller Assembly. Used, from unknown machinery. I have had this for 10-15 years and I forget which machine it came from. It appears to be very well made and likely from sanitary-rated equipment.
It appears to be stainless, but the pieces are different alloys. One part is ferromagnetic and the other is not. It does not have a woodruff key or a nut to hold the pieces together, and they are currently half-separated as shown. I'm sure a few seconds with a mallet would separate the pieces, but I have already taken the photos so that task is for the buyer.
Measurements (see first photo for reference):
Wheel on left is 99.7mm diameter
Wheel on right is 90.9mm diameter
Shaft diameters are 35mm, 48mm, 73mm from left to right
