The best hi hat clutch, hands down. I never worry about keyholing my top hat because there are no threads to maneuver when setting it up. Easy on, easy off.
These are the one you want, (don't bother with the Gibraltar equivalent). I have 2 of these on the kit (one used for a closed right hand HH), they're consistent, reliable and well-made. A really smart product. For gigs where you have to get off-stage fast, I recommend these as well as the Gibraltar swing-nuts for crashes and rides. Cheers.