(Sets of) suspended bells
Sets of percussion vessels, owing to the solidity and elasticity of their substance, vibrate and radiate sound when struck either with non-sonorous objects (hand, stick, striker). The vibration is weakest near the apex from which each instrument is suspended. The player creates clearly defined individual strokes using the strikers (clappers) attached inside the bells.
Hornbostel - Sachs
(Sets of) clapper bells