The green Alien Series Crab Clamp with Magic Arm from Sirui includes a crab clamp, a smartphone clamp, and an articulating magic arm. The smartphone clamp fits devices 2.3 to 3.7" wide and has an Arca-Swiss base that may be attached to a tripod, plus three 1/4"-20 threaded holes, which may be used to attach accessories such as a light or microphone. These 1/4"-20 threads may also be used to attach the smartphone clamp to the 1/4"-20 threaded screw on the crab clamp. In addition to the 1/4"-20 threaded screw, the crab clamp also has a two 3/8"-16 threaded holes for additional compatible accessories, a 360° rotating head, and a clamping range of 0.6 to 1.97", allowing it to be attached to various surfaces. For greater stability, the crab clamp and magic arm are connected to each other.