SUBSTITUTE FOR DRILLING PERMANENT HOLES IN A CYMBAL. RESTS ABOVE THE CYMBAL BELL JUST LIKE A STANDARD FELT WASHER. RESTS ABOVE THE CYMBAL BELL JUST LIKE A STANDARD FELT WASHER. EASY TO INSTALL/REMOVE AT A MOMENTS NOTICE. SMALLER METAL BEADS PRODUCE A CLASSIC JAZZ, SUSTAINED "SIZZLE" SOUND. ALL PROMARK DRUMSTICKS ARE DESIGNED AND MANUFACTURED IN THE USA TO THE MOST STRINGENT QUALITY CONTROLS IN THE INDUSTRY.