ESSENTIAL: For mechanics when labeling engine components, marking tools and other personal property. Fabricator utilizes this system to mark various pieces during fabrication for multiple projects. Will never damage or double stamp the fabric. All-IN-ONE CONVENIENCE: Offering precision and control, this set is a must-have for permanent stamping! It includes a square drive and characters ? letters A-Z, number 0-9 and * to permanently stamp all forms of mild steel and most other surfaces. CONQUER EVERY PROJECT: Designed with two pistons connected by a spring, it delivers up to 5000lbs. of striking force every time ensuring a full stamp image. Easily change and align the interchangeable bits PROFESSIONAL QUALITY: Proudly made, packaged and distributed in the USA, we?re able to ensure our metalworking stamp set reflects our commitment to quality! Our professional-grade provides 5000lbs of impact striking force for durable reliability. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.