... 2.47.5*34*10(CM)/SET/BOX MAGIC BB----patented in 54 countries,15 patents in China, ... countries of different languages within 6 months) MAGIC BB----patented in 54 countries,15 patents in China,endorsed ... assembly. The Joints of Magic BB adopt alloy spring steel of 50CrVa(used in pistol producing), imported from Japan. ... 87523598 / 87523358 / 87523228, Fitness equipment/Patented product Magic BB exerciser