The Kupo Super Knuckle Claw is part of a modular system that uses a double-ended shell designed to hold two 360° rotating ball joints. It securely clamps onto tubular items ranging from 3/16" to 3/4" in diameter, providing flexible mounting options for a variety of gear. The jaw incorporates a ball joint that fits into one end of the shell, while the opposite end remains open to accept an additional optional adapter—allowing you to build a fully customizable support system for your setup.