Mystery Pratt & Whitney tool - the cylindrical shank is exactly .500 inches, it says on the shank, the following: NO. 32 HS.-36 E-12 P&W MFD CT Made in USA it is NOT a drill bit. The part that extends beyond the 1/2 inch diameter shows a wear line like it was riding in a keyway. The point seems to be lathe turned, the 1/2 inch shank appears to be ground