T-206 & T-207 are one set of rolmo cymbals, also known as "bhookh." Together with regular cymbals (flat rather than hat-shaped) and long horns (gDung Chen--T-143 and T-144) they are played for ceremonial occasions at Tibetan monasteries, typically accompanied by bass drums. The hollow, hat-shape of these cymbals gives them the deep, stentorian sound valued in Tibetan sacred music. The rolmo cymbals are held horizontally, using the leather thongs, the upper one moved up and down to produce sound.