About This

• 4Sets Advanced metal brain teasers bring you more challenge and interesting.
• The best office desk toys for stimulating inspiration,relieve stress. Also good for parents-children games,party games killing time.
• Metal brain teaser condenses with traditional Chinese culture and they are quite interesting
• This brain puzzles are interesting for people who love brain games,it's a nice gift for your kids friend family colleague
• Tips: please do not refer to the paper instruction at the very beginning, the really most interesting thing is exploring, but not the result