Material and construction Made from #45 steel with a blackening surface treatment for improved corrosion resistance and reduced surface reflectivity. Impact-resistant and dimensionally stable to maintain precision under regular use and prevent deformation. Performance and reliability Durable construction keeps tolerances intact during machining, assembly, or maintenance tasks, reducing the need for frequent replacement. Designed to deliver consistent, precise results for repeatable work. Practical storage and transport Includes a sturdy orange carrying case with secure latches, an ergonomic handle, and sorted compartments to keep components organized and protected during transport. Case simplifies storage and speeds up setup on the job. Why you need this product Prevents tool deformation and rust, so measurements and fits remain accurate over time. Organized case and rugged materials reduce downtime caused by misplaced or damaged parts. Suited for professionals and serious hobbyists who require reliable, repeatable performance. Typical use scenarios 1. Precision metalworking: use during lathe or milling setup to ensure parts hold accurate dimensions over repeated cycles. 2. Field maintenance and repairs: carry the set to job sites in the compact case for reliable, ready-to-use tools that resist wear. 3. Workshop assembly and inspections: keep components organized in the case for fast access during assembly, fitting, or measurement tasks. Key attributes: #45 steel, blackening treatment, rust-resistant, impact-resistant, durable, precision-focused, and supplied with an orange carrying box with latches, ergonomic handle, and sorted compartments.