Review on 🔧 Red Hound Auto 4 Pack: Steel Strap Long Leaf Hinge with Grease Zerk Fitting - Heavy Duty Weld-on Trailer Truck Body Gate Door Hinge - Greaseable by Trevor French

The mirror fitting seems to be an odd size. None of my grease guns will fit, the heads are too small and the grease only splatters on the outside of the spigot. The threads are smaller so it is not possible to install a Zerk fitting from your local auto parts store unless you wish to drill a loop and cut a tap for a larger Zerk fitting. One of the threaded holes was factory cut to allow the transom mount to pop out on its own. I removed the bolts and just hand lubricated. I think that's how I'll do it in the future. They are very heavy (you have to weld them in place). Even with the mirror adjustment issue, I still felt that for $33.50 (and free shipping with Prime) it was a pretty good deal. Maybe one day I'll drill and tap for a new mirror mount, but considering these are dump truck back doors I doubt they'll need much maintenance.