When fitted, a standard looking machine head....

But turning it over...

There are only two screws, and two of the Philips heads are molded on the casing! I'm kinda staggered that anyone would want to or bother to do that. That it makes enough of a saving to be worthwhile, or that it actually having two screws per head would put anyone off buying the cheapest bass from a budget line. Someone came up with the idea, there was at least one meeting, someone was commissioned to execute it...
I shouldn't have told you lot. I could have passed myself off as a four-screws-per-tuner guy, but now you know my shame.