The Pearl DCL300P drop clutch"s triple-lock vice-like gripping power withstands the heaviest playing. A locking bottom nut keeps the top cymbal securely fastened. Play compensator eliminates play between the latch and slider sections to keep the Pearl DCL300P performing like new for years to come."Triple-lock" gripping withstands rough playing Locking bottom nut secures top cymbal Play compensator eliminates play between latch and slider sections