Is it possible for a hi-hat clutch to be loose and tight at the same time? The DW SM379 locking hi-hat clutch gives you the ability to dial in the closed "sloshyness" (as they call it) and lock it so it doesn't come loose. Made for the DW 9000 series hi-hat stand, the SM379 is a heavy-duty clutch that's made to be rock-solid and road-ready. So take a step up with your hi-hat stand and get the DW SM379 locking clutch.