To give access to closed hi-hats all around the drum kit, the CLH930 clamps a pair of cymbals with a simple spring-action clamp that allows for quick open/closed adjustment. Simply turn the top washer and choose the desired open or shut degree, on hi-hat or even other cymbals for creative stacking. The Uni-Lock tilter gives a nearly limitless option for angle adjustment, and the solid Hideaway Boom Arm allows for positioning as close or as far as your reach requires.