This K&F MS15 super clamp is milled from solid aluminium alloy and has a feel of strength about it. The jaws have rubber pads on them so that they can grip whatever you put there and the jaws can spread so that they can clamp onto bars up to a diameter of 6cm.
Of course, you need to be able to fasten things to it and there are plenty of holes tapped with a one quarter inch British Standard Whitworth thread on the sides and the back of the clamp so that you can fasten pretty much anything that is related to photography to it such as magic arms, lights or various adaptors.
The jaws are tightened with a left and right threaded bar with a curious, asymmetrical wing nut on the top - there doesn't seem to be any reasoning for this other than style. Additionally, it is bright, metallic orange so if you have a reflective surface in your shot, you might find the wing nut in your image The thread is mounted in two cylindrical blocks and as a result, you cannot quickly spin the butterfly loosely as you can on some other super clamps, you have to keep turning it all of the way.
Even so, this is a very handy clamp that has a really good grip and plenty of points where you can connect it to your equipment.