Tama STDC7 Sizzle Touch Drop High-hat ClutchWhen playing double bass, the hi hat cymbals can be closed by hitting the lever on the drop clutch. While in the dropped position, TAMA's STDC7 Sizzle Touch Drop Clutch allows you to adjust the gap between the top and bottom cymbals, allowing for fine adjustments to achieve the desired open sound. To resume normal hi hat function, push down on the footboard of the hi hat stand to secure the clutch back into place as a standard clutch. Hi Hat Sound