Bonshō

Bonshō(Japanese:梵鐘, Buddhist bells), also known as tsurigane(釣り鐘, hanging bells) or ōgane(大鐘, great bells) are large bells found in Buddhist temples throughout Japan, used to summon the monks to prayer and to demarcate periods of time. Rather than containing a clapper, bonshō are struck from the outside, using either a handheld mallet or a beam suspended on ropes.