The DPC-140 Long Lens Quick-Release Plate from Desmond is a 140mm long, Arca-type compatible quick-release plate with a dual dovetail design to help you more properly balance a camera with a larger lens attached. It features an aluminum construction with two 1/4"-20 screws for acquiring the best possible placement for mounting your camera or lens collar. There are two safety stop screws included to prevent movement after the plate slides a certain distance and there is a 3/8"-16 thread in the center for additional mounting possibilities. An Allen key is included for convenience.