This is a rosette for a Tenor Ukulele with a 2 5/8" sound hole. Made of.060” Maple on .010 black fiber for a strong and stable rosette. They need to be filled with epoxy and black powder either before or after inlaying on your top. This is our Tenor Uke rosette with a 2 13/16 inch ID. If this is too thick for your top you can goober it all up with your black epoxy and glue it in face down. When dry sand it flush.