Name: Gangsa (Wikipedia) an instrument used mostly in Balinese/Javanese gamelan. 
A type of metallophone. 
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Wikidata item: Q5521203

External links:

http://musikocordillera.weebly.com/musical-instruments.html

Disambiguation: Many tuned metal bars (normally iron/bronze) placed over an individual resonator. 
Description: They are played in pairs.It plays very rapid parts with a high tempo. It is very similar to the saron and old gendèr. 

Types:

• Kantilan
  • Smaller 
  • Higher-pitched
• Pemade
  • Bigger
  • Lower-pitched