The black Cavision RMA10-D14 Monitor Arm features 3.4" arm segments and is suitable for attaching a DSLR or similar camera to a tabletop dolly such as the Cavision DMB1412. It is a monitor accessory arm with omni-directional ball joints with each of the two segment arms ending in a 1/4" male thread. A single locking knob fastens the middle arm joint and both end joints simultaneously.