J-Hooks are simple, heavy duty, and threaded to hang "strung" instruments and equipment and objects with a loop of some sort that can be hooked onto:
 
Examples of J-Hook uses include:
Finger cymbals
Whistles 
Wire brushes
Small gongs
In-Ear Monitors
Strung pairs of maracas
 
Features
Compatible with the five front and two rear, large threaded sockets found underneath the Primary Board.
Clear sheathing greatly reduces potential contact noise. Plus, given that
Rattle-free nylon wingnut locks in rotational position
Smaller "throat" gives the player a better defined vertical space in which to pick up and replace instruments to help keep your focus where it belongs.
Included beaded plastic ties also allow the J-Hook to be used to suspend triangles by one or two corners. (pictures coming)
J-Hooks are also used as one of the components to allow the Primary Board to be mounted on select marimba, vibes, and xylophone model frames, stand free! (info coming)