The TF-001-50B professional wrap-around style clamp is designed for mounting your lighting fixtures and effects weighing up to 1100 lbs (500 kg) from truss or pipe 2 inches (50mm) in diameter. This clamp also has an M10 wing-nut accessory bolt for an even more secure installation. This is a clamp used specifically in a professional environment and is ideal for mobile DJs, light riggers, and theater stagehands.