Stampola Mini Guitar Chord Stamp (5 Frets) Rubber Stamp  (StampOnly) Stampola Brand Guitar Chord Stamp. Portable. Comes in a small, ziplock plastic bag that is resealable. Fits right in your case. Perfect for Guitar Students, Teachers or Songwriters Made in USA, High Quality Clear Maple Wood Mount, Rich Red and Moist Vulcanized Rubber and 1/8 inch Thick Foam Cushion. Fantastic Learning Tool. Makes remembering that rarely used chord simple, it's right there on your music.