The tool works as it should. Much cheaper than OTC considering it's aluminum and not steel, but for what it does it needs to offer long-term service at an affordable price.
Pros
303-770 Rear Main Seal Installer - For installing and removing the crankshaft rear seal wear sleeve, fits Ford 4.5L, 6.0L and 6.4L diesel engines , Low Cab Front, F-Super Duty 250-550, E-Series.