This is a Tru Turn, all aluminum spinner. Tru Turn, in my opinion makes by far, the best spinners available. This one is new in the package, 3 1/2 inches diameter for a 2 blade prop. The slots for the prop are already cut. The part number is TT-3552-B. I believe these are about $70.00 new. Buyer pays shipping cost. Will ship to CONUS addresses only.