The Kupo 20-Inch Hex Grip Arm - Black is a practical accessory for every outdoor location or studio set. It comes with a baby hex pin at the end, which has six milled flat surfaces for mounting light fixtures and other accessories, similar to a mini boom. The 2.5-inch grip head at the end of the arm’s 20-inch steel tubing is designed with two rotating aluminum discs attached to a 5/8-inch receiver. Each disc has four differently sized, V-shaped jaws for mounting any accessory that has a stud or a 3/8-, 1/2-, 5/8-, or 1/4-inch tubing. Furthermore, the arm is designed with a rough texture that prevents it from slipping away.