Assortment includes 20 pieces of mixed sizes and cuts of aluminum, anodized aluminum, and brass plated steel blank engraving plates. This is a great assortment to keep on hand if you do any type of CO2 laser engraving (they are not intended for rotary engraving). The large variety of sizes within the assortment allows you to have an appropriate size plate for many jobs at hand. Make your own engraved plaques with our aluminum and brass plated steel assortment. Uses range from engraved name plate, desk plates, commemorative plaque, and award plaques. Sizes may vary for each assortment. Laser cutting depth 0.025 (.001” inches).