It is specifically for Sony PMW-EX3 camcorders. It adds rigidity to the camcorder when on a tripod in a way that the stock tripod thread cannot, and provides a very comfortable shoulder rest. EX3-PLATE is machined from aluminum, given a machine finish and anodized for scratch resistance and durability. The shoulder pad is laser cut from a durable adhesive backed water resistant foam. This product offers several 1/4" and 3/8" tripod screw mount points, which can make operator install small photo accessories to help take perfect video. Furthermore, it supports Anton-Bauer Goldmount plates, V-lock battery mount plates (BP battery plate).