sliding hook

slid·ing hook

a movable attachment used on an orthodontic wire for the application of elastic traction or headgear force.

slid·ing hook

(slīding huk)
Movable attachment used on an orthodontic wire for application of elastic traction or headgear force.
References in periodicals archive ?
The experienced striker worked his butt off in a slightly deeper role, chasing back to make a superb sliding hook tackle that sparked the build-up to City's second and continues to show what a valuable player he is now that he's getting a sustained run in the side.
The generously-sized boot comes complete with horizontal rails and sliding hooks that can hold carrier bags or be attached to a net.