Copper 437 3 blade prop.
Ready to use out of the package.
You can sharpen it a little more than it is now (and rebalance), but it is not too bad the way it comes.
37mm Diameter 52mm Pitch (1.45x2.0 inches)
Good for 3.5 outboards and 12 to 18 sized nitro hydroplanes.
3/16 inch bore.
Made from coper alloy.
Includes 1 prop.