The new Heavy Duty (HD) Single-Locking Articulated Arm Master Kit adds further versatility to the outstanding HD Arm. The Master Kit includes a rugged tripod base and a beefy head bracket for attaching larger accessories that require lateral support. Perfect for mounting monitors, small lights and small cameras, and capable of easily holding 5 pounds, the HD Arm also boasts a slick locking mechanism that allows you to loosen all three joints with a single lever. The system includes a reversible brass mounting stud with 1/4"-20 and 3/8"-16 ends and our universal clamp for mounting to bars or flat surfaces. The HD Arm Master Kit is robust, easy to use, and incredibly helpful in video, photo, and film applications.