Feature: Colour: Black Material: aluminum alloy Package content: 1*peanut clamp + large crab claw clamp 1.High QualityMade of solid aircraft aluminum. This is a multi-functional double ball head with lower super clamp and 1/4" tripod threaded screw for mounting monitors and LED lights . 2.UsefulComes with a double ball catcher with 360 degree swivel to allow easy direction. Single locking knob for quick and secure locking Standard 1/4" 3.ConnectingComes with 1/4"threads to set up other configurations. 4.Sturdy ClampExcept the ball joint screw knob is plastic, the rest of this clamp set is made of aircraft aluminum The piper clamp has rubber foam coating to prevent scratches. 5.Flexibility You can remove the ballhead arm form the clamp and install a different type of arm with a standard 1/4 male screw; the ballhead can be also used on something else because of the standard 1/4 male screws at both ends.