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.