This adapter allows a Cinelock quick release to attach to any standard Arri Accessory hole pattern without twisting. The Arri accessory holes are 3/8-16 UNC threaded holes with a 4-way locating hole pattern, and are found on Arri Alexa and Amira handles, Arri PCS accessories, and aftermarket accessories. This cradle is machined from 6061 aluminium, anodised black, and features two stainless steel 3mm locating pins. One 16mm long 3/8"-16 flat screw is included to compensate for the cradle's 4mm depth.