Packing: includes 1 super clamp + 1 double ball head adapter Features: Double ball head mount with clip, a 1/4"" screw on the top, used to connect monitor, small light, microphone to your pole system The jaw opening range: the maximum opening width of the jaw is 1-7/8"" (47mm); the minimum is 9/16"" (15mm), and the load can reach 4.4lbs (2kg). Rotatable: 360 degree rotation can easily control the direction of the flash/display. A single locking knob in the ball head allows quick and safe operation. Durable: aluminum alloy structure, anti-rust and anti-corrosion, durable. high quality Aluminum alloy structure, anti-rust and anti-corrosion, durable. Rotatable 360 degree rotation can easily control the direction of the flash/display. A single locking knob in the ball head allows quick and safe operation. Chin open The maximum opening width of the jaws is 1-7/8"" (47 mm); the minimum is 9/16"" (15 mm), and the load can reach 4.4 lbs (2 kg). application Double ball mount with clip, with a 1/4"" screw on the top, used to connect monitors, small lights, and microphones to your pole system