The Avenger Grab Clamp With Universal Head utilizes a pincer jaw design that is flexible and fast. The clamp features a universal design, capable of being affixed to a wide variety of round or square pipes, bars and beams. The 1/8" junior receiver and 5/8" stud are perfect for fixtures and gears. With a push-button lock for extra safety, the grab clamp can safely hold up to 165 lbs.