The five kempul of the gamelan sléndro K.K. Marikangen.

Medium-size, vertically-suspended bronze gong with turned-back rim and a raised central boss that is struck with a thickly-padded beater. Produces a penetrating middle-register pitch. Pre-modern common practice gamelans have a single kempul, while modern ones typically have five (for gamelan sléndro) or six (for gamelan pélog) hung from a common rack.