Grover Champion Sta-tite Baritone Ukulele Friction Tuning Pegs - 88B A longer shaft ensures a proper fit for baritone ukes and other ukuleles with a thicker headstock. These pegs are the perfect inexpensive fix to get your uke back up and running. These pegs are a little larger than vintage ones so some reaming may be necessary. Hole Size: 11/32" Peg Head Thickness Compatibility: 1/2" Black plastic and nickel hardware; Model: 88B