Atop the PROMASTER CH75 CINE HEAD you will find the ProMaster dovetail quick release system (arca-swiss compatible), which works with a host of ProMaster accessories as well as many other industry-standard products. The included plate is extra-long so you can slide it to find the best balance point for your camera. Once you do, record the number from the scale on top of the head so you can set up the same camera even faster next time. The CH75 head also has an accessory attachment port (3/8” threaded). This makes it easy to connect all kinds of accessories, especially an arm and external video monitor.  The movements are very smooth overall and there is a drag adjustment control.