WEBThe chū-daiko (中太鼓) is a medium-sized nagadō-daiko ranging from 1.6 to 2.8 shaku (48 to 85 cm; 19 to 33 in), [69] and weighing about 27 kilograms (60 lb). [70] Ō-daiko (大太鼓) vary in size, and are often as large as 6 shaku (180 cm; 72 in) in diameter. [71]