Beaducation Arrow Metal Design Stamp, 11.5mm Large Classic Basic Style Punch Stamping Tool Hand Stamped DIY Jewelry Crafts Original Metal Design Stamps Large Classic Arrow Metal Design Stamp - Beaducation Original Design measures 11.5mmx 3mm. Made from 1/2" 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.