🔧 Stamp Your Mark with Confidence! Each stamp delivers a crisp 3/32" (2.5mm) impression for professional-grade results. Comes with a full set of numbers 0-9 for all your stamping needs. Designed for both functionality and aesthetic appeal in your workshop. Engineered from high-quality carbon steel for a long-lasting tool life. Perfect for marking on copper, alloy, iron, and steel up to HRC60. 2.5mm Precision High Hardness Durable Carbon Steel The Wokesi 3/32" (2.5mm) High Hardness Carbon Steel Uppercase Number Ball Pein Hammer Hand Reverse Punch Metal Stamp Set is a professional-grade tool designed for precision stamping. Made from durable carbon steel, this set includes numbers 0-9, perfect for marking various metals, ensuring high-quality impressions every time.