Pearl Uni-Lock Hi Hat Holder with Mount CLH-70Uni Lock Closed Hi Hat Holder with Multi Angle Mounting Clamp. The Uni Lock Closed Hi Hat Holder puts a pair of closed hi hat cymbals in easy reach practically anywhere in your set up. For added hi hat voices all around the drum kit, the Uni Lock Closed Hi Hat Holder puts a pair of closed hi hat cymbals in easy reach practically anywhere in your set up. It features a multi angle quickset clamp that attaches to any stand with ease. Its durable boom arm