The Gibraltar SC-GRSHML memory lock is designed to be used alongside component rack clamps and at the knuckles of the rack (the joints). They have a male tab that fits into a female cutout that locks the clamp or bar into the same position every single time for stability and easy set-up. Accepts 1 1/2" diameter tube.
Hinged memory locks make it easy to add another drum or cymbal to your rack without taking it apart. It's simply added or removed because of the hinge.
Dimensions