Item Type: Hi?Hat Clutch_x000D_ Material: Aluminum alloy_x000D_ Clutch Size: Approx. 2.2 x 8cm / 0.9 x 3.1in_x000D_ Knob Width: Approx. 4cm / 1.6in_x000D_ Felt Pad Diameter: Approx. 3cm / 1.2in 1The hi-hat clutch system saves time and effort. The automatic clutch can be released simply by pulling the metal sleeve. 2Slide down the felt pad, install the hi-hat clutch, then push it into the bottom of the metal sleeve and lock it to install. 3Made of high-quality aluminum alloy material, light weight, high strength, not easy to be corroded and deformed. 4The hi-hat clutch is equipped with a self-locking knob, which can be adjusted to achieve a proper foot pedal sound. 5The drum clutch is compact in appearance and easy to install, making it an excellent replacement for drums.1 x Hi?HatClutch