Connects an extension arm to a light stand; Holds the boom arm in place. Enables to adjust the height and angle and gives you flexibility to position the equipment. With an excellent locking system for stability and safety, this will hold a of items; Easy to set up and use. Accepts any accessory with a 1/2, 1/4, 3/8, 5/8-inch mounting stud or tubing. The grip head is a very versatile piece of studio equipment,Connects an extension arm to a light stand; Holds the boom arm in place. Colour: silver Material: stainless steel Size: 4mm, 9mm, 12mm, 16mm Package Contents: 1 * Grip Head Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.