pearl hi-hat attachment with adp-20 pearl hi-hat attachment with adp-20. the pearl ha-130 hi-hat attachment set is great for double bass setups for added stability and fast pedal transitions. rubber jaws rotate to fit the hoop for slip-proof clamping regardless of your kick drum's size. a cowbell-type eyebolt holds the knurled z-rod for set-and-forget dependability. includes the pearl ax-20 stand clamp/adapter.