slow dolphin camera clamp mount monitor mount bracket super clamp w/1/4 and 3/8 thread with cool double ballhead arm adapter bottom clamp for for dslr camera/field monitor/led (2 pcs) slow dolphin <p><b> double ball head clamp mount with 1/4" screw on the top </b><br> multi-function double ball head with bottom clamp and 1/4" screw .<br> double ball mount with 360 degree swivel support 360 degree articulation <br> single locking knob for fast and safe operation </p> <p><b> super clamp </b><br>the super clamp jaw opens to max about 2.16" , and minimum 0.55" <br>can clip 0.55" to 0.76" rod </p> <p><b>package dimensions: 6.2" /4.6" / 2.6" </p> <p><b>packing weight: 210g </p> <p><b>package includes:</b><br>2 x super clamp</b><br>2 x double ball head clamp mount with 1/4" screw on the top</p>