Remo Drum Set, inch (HK-9045-00) Allows for quick changing of hi-hats with a lock-notch system rather than a typical screw off-and-on system Eliminates any possibilities of Hi-Hat cymbals loosening while playing Enables Hi-Hat cymbals to be changed in seconds, not minutes By pressing a locking pin assembly, cymbals can be quickly and simply changed out between tunes at a gig