Red Ball Professional Quality Kendama - Full Size, Balanced Ken By Ooyo! (USA) Classic Japanese Look With Extra String, Get One NOW ! Standard full size (7 inch) quality kendama, builds coordination, speed, focus, reaction time, and motor dexterity. Unparalleled pricing ! Compare it to other kendamas which have this kind of quality. Ooyo's dedication to quality manifests itself in this product but we have priced it as low as possible to reach out to everybody. The classic red ball is traditional as it gets. Designed for the expert but priced to reach everyone. Build the skills of a fine tuned martial artist or keep physically and mentally sharp at any age with techniques which can be simple or intricate and complex. The only kendama you will really need to build competence and confidence in your skills(however it is still fun to collect all types).