These are Brand new 316 Stainless Steel Mixer Propellers originally manufactured for sewage mixing application. Propellers are weedless design to prevent clogging from fibrous materials.
Propeller are 8.25 diameter clipped with a 5.5 pitch. Propeller bore is 1 and attaches to shaft via 2 stainless steel set screws included. Original design load is 3 horsepower at 1800rpm in water. Propellers are left hand rotation. Please let us know if you have any questions.