K&F are a name I recognise from many years back. They produce a range of photographic hardware that I've found to be reliable and long lasting.

This Magic Arm is well built, very solid and operates *quite smoothly. The griping head has a reasonable sized opening that is suitable for the rest of the unit. Not too big, not too small. The articulated arm is screwed into the base of the grip and there is a rotating ring to tighten it up and hold it in place. Like every design that relies on one rotating ring this will not stop the whole thing drooping. Instead you need to tighten the ring and then attach the arm and tighten the base to that. Same applies at the other end. This isn't really a problem, just how things work. Once you've screwed everything together you simply use the knob to tighten the arm and hold everything in place.

I really like the quality of the metalwork especially the colours and the slightly different knob designs which should help you avoid adjusting the wrong one in error.

*quite smoothly. So I found that the rotating heads at both ends felt a little raspy. If you fully back off the tightening knob everything is smooth but I usually prefer to just back off a little to leave some tension and this is when it's a bit rough. Anyway a few drops of 3 in 1 oil on the ball heads seems to have cured all that.

The arm is approximately 200g and the head 100g. In use they are quite rigid and so transfer every wobble, knock and vibration. If you are putting a camera at one end you might want to devise some sort of external damping.