The Meinl Magnetic Sustain Control is a unique and easy way to tweak the sound of your cymbals, cowbells, or other instruments. By positioning the magnets in different spots on the surface (mated on top and underneath), you can control the sustain, dampen the tone, adjust the volume, and optimize the sound of your instrument to just the way you like it. DETAILS •Features: Easy mountable •Features: No strap modification required •Features: Individual Cymbal Sounds •Contains: 2 big and 2 small magnets