SmallRig 3724 Crab-Shaped Clamp & Magic Arm with Ball Head - 3724 consists of a crab-shaped clamp and a magic arm (11"). It is made of aluminum alloy and stainless steel to increase robustness and durability. Particularly, the clamp features 1/4"-20 and 3/8"-16 threads and maximum/minimum open distance of 54mm and 15mm; the magic arm comes with two ball heads and one ball head clamp that enable 360-degree adjustment as needed, as well as 1/4"-20 screw at both ends, allowing quickly connecting cameras, monitors, lights and other equipment with pipe posts, tables, bike bars, etc. Both the clamp and the magic arm are fitted with rubber pads to prevent scratches and help lock equipment in place. Note: Max load: 2.4kg   Package Includes: 1 x Magic Arm 3238 1 x Crab-Shaped Clamp 735 1 x Screwdriver