Review on Gearbox NMRV 030 Speed Reducer Ratio by James Wiley

I ordered three for a project. Fulfilling Revain so shipping was quick and they were pretty much as advertised. The only annoyance is that the mounting bolts to attach the gearbox to anything (i.e. not motor mounting holes but another set of holes around the output shaft on either side) are M6x1, not M5. It seems strange that they chose a different thread but left the hole spacing the same as the Nema 23 flange. However, they didn't list the holes that I could find in the pictures and product description, which doesn't mean they do did not deliver as stated, they simply did not state. Buyers may find it worth taking the time to inspect before planning an installation so you don't pick the wrong fasteners (or the factory doesn't have specs for those holes and you get what you get).