Drums & Percussion Instruments
Meinl 20" Wave Drum
Meinl 20" Wave Drum, Wave Drum, Size: 20", Sonic Energy series, Siam oak frame, Selected goatskin and plastic skin, A closable hole which allows changing the filling quantity of the steel balls, Different sounds through two different skins
https://www.bizrate.co.uk/drums_percussioninstruments/meinl-20-wave-drum-oid16093810010.html