Hard Bamboo Professional Quality Kendama, Heavy, Full Size, Precision Balanced Ken By Ooyo! (USA) Super Pricing, Extra String, Get One NOW ! This is a Standard Size (7 inch) Super Heavy Kendama and has the feel of a high quality precision weapon. Takumi will redefine what a kendama is. Unparalleled Pricing. Similar Quality Products may sell for 2-4 times as much. Ooyo's Dedication to Quality has Manifested Itself in This Product. This is a heavy hardwood precision instrument affordable by anyone. Build the skills of a fine tuned athlete or artist and keep physically and mentally sharp at any age with techniques which can be simple or intricate and complex. A very unique, heavy kendama that any user will want in his collection.