Stop in for a cup of coffee

Is this an actual thing or snake oil?

From the ad:

These are for CLOCKWISE rotation only. These have been helically machined to funnel the oil to the shaft. This helps reduce the elongation of the bushing bore and prevents premature gear failure. The oil slots in bore are large enough for oil to easily enter and also acts as a reservoir. No need to drill a hole in the lifter galley plug like some guys do.

NEW MOPAR SB LA 273, 340,360 HIGH RPM intermediate shaft bushing upgraded | eBay