Gibraltar SC-CS8MM Cymbal Sleeves 8mm
Sleeves that fit over the threaded portion of cymbal mounts to protect cymbals. Allows the cymbal to be seated correctly, sandwiched between the felts and resting securely on the cup and protected from key-holing and excess wear.
If you're serious about protecting and preserving the lifespan of your cymbals these are essential items. Handy to take to gigs, jam sessions and rehearsals.
A bit flimsier than I'd hoped but for the price I guess that's to be expected.