This is a smartphone tripod holder from the K&F Concept brand, specifically the KF31.094 model in black. The adapter has a good manufacturing quality. It's made entirely of aluminum alloy, so it's lightweight and sturdy, it's built to last. It has a 1/4" thread, so it can be adapted to any tripod, monopod and even gimbals. It is valid for phones of all types, as long as they do not exceed 93 mm in width, since this is the maximum opening to which the handle can be extended. The pressure exerted by the shooter on the phone is strong enough to hold the phone securely, nothing to object to in that regard. What I don't think offers the same security is the rest of the piece, especially the part that tilts next to the tripod mounting shoe. As for its use, it is quite useful and practical, especially because the adapter allows you to vary the angle of inclination up to 180°, in addition to allowing a 360° rotation, making it easier to use the phone vertically or horizontally. One of the reasons why I requested this adapter is because on both ends it has shoe adapters, which makes it easy to integrate devices such as filling lights, microphones, etc. As for the price, I find it appropriate, so for that part there is nothing to object to. The truth is that I really liked the adapter, it is very practical and does its job properly. As for the price, it is somewhat high, although its quality is also high, so go for it one for the other. For my part, I have been completely satisfied with it and I have no qualms in recommending it, it's fantastic. I hope this review was useful to you:)