P. Def. + 1 for B-grade armor and accessories. Starting from + 4. P. Def. + 3. Can be safely enchanted up to + 3. For one-piece armor. it can safely be enchanted up to + 4. HP gradually increases with each enchant level starting from + 4. If enchanting fails. the item will not be crystallized but the enchant value will be reset to 0. Cannot use on armor or accessories above +30.