The Novoflex Q-Griff Arca-Compatible Hand Grip attaches either to an Arca-compatible rail on a modular camera rig or directly to a camera with an Arca-compatible quick release plate. Either way, you get a reliable, sturdy grip for your camera (or camera rig) that comes complete with an adjustable hand strap for added security.
Capping the Q-Griff grip is a Novoflex Q=Mount Mini, which attaches to the hand grip element via the grip's 1/4"-20 screw. (This screw makes the hand grip compatible with any camera support systems that have 1/4"-20 threads.) The Q=Mount Mini is the Arca-style quick release element, and it fits slim-style camera plates from Novoflex as well as all Novoflex Arca-style rails, such as those of the MultiMediaRig line of modular DSLR rigs.