I'm not gonna find out but indoors without earplugs they sound like a flashbang at full force, and when i clack them out into the river from the park, I get a clear echo off the other riverbank.
(i don't play professionally or even correctly, I got them as portable protest percussion and lemmie tell you, you have no idea how loud a stick of dense fiberglass cupped in one hand and hit by another one can get.
they're a set of LatinPercussuon King Clave)
