neewer multi functional heavy duty 2.5-inch grip head swivel head holder mounting adapter for light stand, extension boom arm and other photographic equipment with 1/2,1/4,3/8,5/8-inch mount (black) neewer <p><b>note: grip head only; light stand and boom arm are not included <p>descriptions:</b> <p>connects an extension arm to a light stand; holds the boom arm in place <p>enables to adjust the height and angle and gives you flexibility to position the equipment <p>accepts any accessory with a 1/2, 1/4, 3/8, 5/8-inch mounting stud or tubing <p>locks tight with less effort <p><b>package content:</b> <p>1 x 2.5-inch grip head