No clue whose they are but the fit and finish is top end...so top end that when the screw is removed they don't come off...
When I have a little more time I'll try...
The screw is very different in that it is slotted at both ends and both the screw and the threaded end cap come out...so unlike Smith grips that one can tap on the screw head to pop off the opposite side this one can not be removed that way...
Bob
If you can not deal with reality, reality will deal with you....
