HYPER CLAVE Hollow Metal Claves -Capable of EXTREME projection- outdoor rated for years of stable tone -Sweet spots marked for education -Hold tight for wooden sound, loose for anvil sound -Non-corroding aircraft alloy with bright ends -Medium Pitch and High Pitch pairs Oval Claves -Two tones per tube created by oval shape -Double tone at same time by hitting at 10 Oclock position. -Shocking anvil tones from various striking positions -Oval Medium Pitch and Oval High Pitch pairs