Name: keplok (Wikipedia) 
A type of clapping 
Wikidata item: Q6393214

External links: 

https://wikivisually.com/wiki/Keplok

https://www.revolvy.com/page/Keplok

Disambiguation:  A type of clapping used in Javanese gamelan 
Description: It has an interlocking rhythmic pattern. Normally, one person would clap the on-beats and then the other would clap the off-beats. Additionally, another pair will clap at half the tempo. This pattern is similar to the patterns played by the saron. 

Uses:

• Performed when gerong are not singing 
• Performed with senggakan