This is Zacuto's 15mm rod based wooden handgrip designed for your left hand (Right Trigger Grip also available). It attaches to any standard 15mm rod, giving you a sleek, comfortable, solid hand grip on your rig. Zacuto's trigger grips are the most adjustable grips available. They allow for single-handed 360° rotation with the simple press of a trigger, allowing you to get it in the right position for your shooting style. And you can quickly flip it up to set your camera flat on the ground or for storing in a bag or case.