In my previous review, I noted missing parts: no way to attach part which receives ball head to this device, included tripod screw not long enough to decently attach to ball head, supposed to have a hook on opposite end with piece to hold counterweight: missing that assembly. I was very unhappy and returned the unit to Amazon.
K&F reached out to me and after several emails, they offered to send a new unit directly. Since I have been looking for something like this product, I accepted their offer.
The new unit, sent directly from China, is what I should have received earlier. There are no missing parts, there is an instruction sheet, all went together properly and works as advertised. I am guessing the earlier product (which came in a plain brown box, BTW, not the properly-labeled one which I received the second unit) had been returned by someone and either was not completely returned or pieces were lost at Amazon.
Based on the new unit, I can now recommend it. Keep in mind that this is not an industrial-strength unit (nor is it priced like one). But for general-purpose use, it is certainly adequate. I suggest you keep an eye on the weight balance so it does not tip over if you put too much weight on the bullhead end (there is a hook on the other end for a counterweight, but I don't think you would want to overweight that end either).
For the price, recommended for light/medium weight cameras. For heavier duty, you will likely need a much heavier and much more expensive unit. This fits the bill for me, and I recommend K&F's customer support for their followup.