Schaller S-Locks M NI

German quality and worth the price even if that seems a bit high compared the copies out there. They have made the screw one piece with the button as opposed to 2 pieces, plus you will need an hex/allen key to screw them in. Also be aware that the screw thickness is a bit bigger than the previous models so you may need to widen the hole on your guitar/bass a bit first a little to avoid finish cracking. The latch that goes on your strap are a big improvement over the older version with a tiny set screw to hold the second piece in place, the old ones would come loose after a while but these will remain there until you want to remove them. They come in a fancy box which I am sure is not needed and they could do with supplying the allen key. Buy with confidence a very good product for sure.

I searched if this would fit a Gibson nicely or if it would require for the original strap hole to be widen and couldn't find much information. The screws on my Gibson were nearly 4mm wide and the Schaller locks that come in this pack are 4mm.
I did not have to force the screws in, it was an effortless task altough I suspect that the original screws might not be as grippy as they were if I ever put them back on, for re-sale purposes.
In short, you do not have to widen your original strap holes with any kind of tool if your buying for a Gibson Les Paul as the screws are nearly identical. Do be aware that Fender and PRS stock strap screws are thinner as I have one of both and they seem more like 3,5mm rather than the Schaller 4mm.