This is the first time I have used a magic arm of this type, since until now I have only used the shorter ones with two sections on the sides instead of 2 long straight tubes. I had used both the Smallrig and Coman brands, and this magical arm of K&F Concept has the same build quality. It is made entirely of aluminum and the joints work great, with a good feeling of strength and stiffness once we tighten the nut without exerting excessive force. The truth is that it is amazing to be able to lock the 3 ball joints simply by tightening the central nut, which allows you to adjust the position of the equipment you are fixing very quickly. At both ends of the arm, we also have a 1/4 inch connection with locking pins, something that is very comfortable to hold without much force equipment compatible with this connection. However, another advantage is that these pins are retractable and we can assemble any equipment without disturbing them. However, not everything is perfect. The weakest point in the set is, without a doubt, the included clamp. Although it fulfills its basic function of being attached to tubes, its design is quite simple and significantly limits mounting possibilities. Unlike other options on the market, such as some of the Smallrig or Coman clamps, this one doesn't offer the versatility of securely attaching to flat surfaces such as tables, shelves or desk edges. For me, this is an inconvenience, since I often mount my arms on the edge of the desk to hold LED lights, and the Smallrig or Coman tweezers have articulated ends that allow force to be exerted much more evenly without the risk of damaging the table. In short, this K&F Concept arm is a good option if you are looking for a magic arm with good construction quality and a good length. But if your workflow requires more versatility at mounting points, you may want to consider investing in a more advanced gripper or looking at options from other brands.