Purchased for use with an Olympus LS-20M AV recorder, to hang over a DSLR lens in a pole clamp system. If you try to attach the recorder to the screw provided with this clamp, it will be tightened in the recorder's tripod socket, but the clamp will still come loose. It's possible for this particular clamp to be misused and not sure if it will produce similar results with other devices, but you may need additional hardware to keep it secure. I got a rubber washer with a 1/4" hole in the center from my local Lowe to put between the clamp and the device mounted on it. This provided enough friction to hold the recorder securely to the clip.