DW DWCP9799 Double Cymbal Boom Stand The patented Cymbal Seat Adjustment can be raised or lowered and quickly locked in place to adjust cymbal movement as needed The Toothless Tilter with TechLock allows for infinite adjustment and secure positioning The Techlock secondary drum key locking system is inspired by working drum techs; On all DW 9000 hardware, it's a safe-guard against slippage