This is the premium set we made for Gibson's Allwood Les Paul Standard model. We are the ONLY provider of these specific rings and ONLY ours have been First Article Approved by Gibson and used on a production model. We know our stuff - these are the best. It is the ONLY ring available that was designed to the exact shape of a plastic ring as it actually rests once it's installed. That means, each surface has been shaped EXACTLY to each curve and height. Think of them as the "Dan Erlewine" neck jig applied to a pickup ring set and you get the idea. It also means that you do not have to sand any material - these will install perfectly right from our shop to yours. They will fit perfectly on any Les Paul with a Carvetop - Memphis or Custom Shop. If you require a wood type other than what we list here, or you would like to send us some of your special material to cut, we can provide those services if you contact us via email - john@pickuprings.com