Tensa Zangetsu replicas in our collection are available in two steel grades: 1045 carbon steel for the black-blade variant and 1060 carbon steel for the white-blade version. The difference matters to collectors beyond aesthetics — 1045 is a mid-range carbon steel with a slightly coarser grain that takes dark surface treatments well, making it ideal for replicating Bankai's compressed, intense visual tone. The 1060 variant has a higher carbon content, which contributes to a finer grain structure and a surface that holds polish more distinctly. Both are full-tang constructions, meaning the steel runs the full length of the handle, which is important for structural integrity in a display piece and adds to the authentic heft collectors appreciate when handling the replica.