I purchased this for a Les paul custom when converting from Gold to Nickel hardware. A bit on the expensive side, but what can you say? Small company handmade products from solid brass! 
 
Pros: 
All around years beyond in quality over the pot metal Nashville that comes on Custom shop guitars!!! worth every penny. 
 
Cons: 
None really. But I understand that the price is quite high for this product, but considering what you put it on, I would say it is more than a fair price. Often the difference in price between entry level and "pro" guitars is the hardware quality. This piece is truly the best of the best - I have tried several different brands/materials in the past.