Kendama USA - Jake Wiens Pro Model - v4 - Moon Rock Grey Kendama usa is america's original & most trusted kendama source. Kendama is an active traditional japanese game that builds hand-eye coordination, balance, reflex, & creativity. Great for all ages, young and old alike. There are endless trick possibilities for both the beginner and the seasoned master! High quality kendama stands 7 inches tall and can be used for both left & right handed players. No batteries required! Every pro model kendama includes an instruction manual, stickers, and a replacement string and bead.