【Product Name】 Huzzle CAST Master Ball (HANAYAMA / Difficulty Level 6 / Most Difficult Model) 【Product Overview】 The Master Ball is the most difficult puzzle in the globally popular metal puzzle series "Huzzle." You can enjoy disassembling and reassembling it by solving the hidden lock structure inside the sphere. It's a perfect item for brain training and collecting. 【Condition】 Brand new, unused 【Shipping】 ・Will be carefully packaged and shipped via Yu-Packet Plus. ・We aim to ship within 24 hours. Thank you for reading to the end. Recommended for those who love brain-teasing puzzles.