These indispensable studio & location accessories can hold just about anything: cameras, lights, umbrellas, hooks, shelves, glass, cross-bars, even other Super Clamps. Ideal clamp for photographic application. Ergonomic lever to securely lock clamping position. weight 0.41kg load capacity 15.00kg clamp range min round tube 13 mm clamp range max round tube 55 mm color black material aluminum attachment (bottom) 16mm hexagonal + M5 & 1/4" threads TØV yes