Beaducation Music Note Metal Design Stamp, 5mm Musical Sheet Musician Song Play Instrument Punch Stamping Tool Hand Stamped DIY Jewelry Crafts Original Metal Design Stamps Music Note Metal Design Stamp - Beaducation Original Design measures 5mm x 4mm Made from 1/4" square heat-treated tool steel. Beaducation Original Design. Made in the USA. Made to stamp on typical jewelry making soft metals, such as sterling, gold filled, copper, brass, pewter etc. Do not use on stainless steel.