The set consists of a Magic 28 articulated arm and a walimex pro anti-twist device. The walimex pro anti-twist device prevents articulated arms from loosening at the connection point between the ¼ inch screw and the hole due to leverage. The lower part of the anti-twist device can be easily attached to a rig or cage using two 1/4 inch screws (included in the package). The adapter is designed so that you can also attach your articulated arm to other surfaces, such as wood or concrete. Two elongated holes allow for different hole spacings. The articulated arm is screwed into the 1/4 inch internal thread of the anti-twist device via its 1/4 inch threaded bolt and is additionally secured with the included hex screw. The upper part of the anti-twist device is also fixed in place using a hex screw after the articulated arm is screwed in. A hex key is included in the package. Accessories that are to be mounted on the articulated arm are placed on the accessory mount and can be conveniently secured with a 1/4 inch knurled screw. The cumbersome process of screwing accessories onto the articulated arm is completely eliminated. The screw features recesses for tightening it securely with the hex key. A rubber plate on the accessory mount additionally protects against slipping.