By ACME Marine for 2-1/4" - 2-1/2" Shafts.

Awesome device that works by simply removing your prop nut, screw the harmonic puller onto the shaft and gently tap with a hammer. Bingo; prop comes off!

1-3/4" - 5 - UNC

NOTE: You do NOT have to screw it on far enough to reach the prop hub! May have to wiggle the prop as you are tapping on the harmonic puller.