Beaducation RV Camper Metal Design Stamp, 8mm Caravan Mobile Home Trailer Punch Stamping Tool Hand Stamped DIY Jewelry Crafts Original Metal Design Stamps Camper Metal Design Stamp - Beaducation Original Design measures: 8mm wide by 5.75mm high. Made from 3/8" 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.