- The Ball Is Made of High Carbon Steel, very hard ansd solid
- Kusari-fundo (קוסארי פונדו), (万力鎖) also named Manriki-gusari (Manrikigusari), is a versatile and concealed weapon in the arsenal of Ninjutsu.
- The Ball's weight is about 300 grams, can bring ultimate strike power.
- Great Ninja Weapon
- Chain Length about 50cm
- Full Weight: 450 grams
- Can be daily conceal carried