The Logitech G915 is one of the best pre-built gaming wireless keyboards but let's be honest, their keycaps suck. 

I had mine for about 3 weeks before 53/87 keycaps decided to break one after another, and Logitech does not sell another keycap set. 

I modeled these pegs to mimic the original pegs but they are much more robust than the original Logitech ones. 

They are easy to install, just make sure they are leveled against the original keycap top and use good adhesive. I recommend using PETG or PLA for these.