This thing is absolutely awesome. The key concept to understand is that tightening the one thumbscrew at the center tightens the center joint and both ball joints at the ends simultaneously. Even better, the center joint has teeth which make it hold its position (albeit with a little play) while the ball head joints are still moveable. It truly is kind of magical how you can adjust three separate rotating joints with one set screw. Once tightened, the hold is very secure. For a phone, it’s almost overkill. For a mirrorless camera, I would be cautious, especially with a long, heavy lens attached. The arm clamp works well for thin tabletop edges and tripod legs, but it falls short of being “magic”. The phone holder is fine, but nothing out of the ordinary. It should hold most phones securely.

I’ll point out that both ends are 1/4” male. I will likely invest in a couple of adapters to give me more flexibility. For example, I can’t attach this to a tripod head as-is. There are other versions which might have been more suitable for me, but this one was available for me to evaluate through the Amazon Vine program, so this is the one I landed on.

This mounting arm is pretty easy to mount items to and the arm is more secure once you tighten the center joint down once you position how you want your device to be oriented, it also anchors each ends mounting screw in place so you don’t need to worry about slippage for your camera or stream light as it seems to slip if the item is too heavy.

This clamp arm looks really well made and feels like it would hold up well over time. I like that you can adjust it with one main knob instead of messing around with a bunch of separate pieces. It seems really useful for mounting a phone or other gear to a tripod, pole, or desk. The rubber padding is also a nice touch so it doesn’t scratch things up. Overall, it seems very practical and well designed.

This is an excellent and reliable mini super clamp. I have owned quite a few super clamps in various sizes for my photographic business over the past 40 years and this mini sized one is perfect for holding all kinds of small accessories. It's especially convenient for positioning a monitor on your video rig or attaching a small LED light in just the right place during a location shoot.

The oversized locking knob is greatly appreciated as it lets you apply extra tightening pressure which locks all three joints super securely allowing no movement in the arm whatsoever. An excellent design.

I also like that the rubber pads on the clamp are glued in place rather than simply being force-fit into mounting holes - the method used by other brands of clamps.

Interestingly, the phone holder is designed so that both ends expand outward to hold your phone instead of just one end which is found on most phone holders. What this means is that the 1/4"-20 socket on the back will stay perfectly centered in the middle of your phone or other accessory like a portable hard drive you need to mount.

This is one of those accessories that ends up being more useful than expected. The setup is simple: a metal super clamp, a 9.8-inch articulating “magic arm,” and a phone holder. Both ends of the arm use standard 1/4" mounts, so it works with cameras, lights, microphones, monitors, or anything else that uses the common tripod thread.

The clamp itself is quite sturdy. It opens wide enough to grab table edges, tripod legs, poles, or shelving, and the rubber pads help prevent slipping or scratching surfaces. Once tightened, it holds position well. Its strong enough that you have to be careful not to damage what you are attaching to.

The magic arm uses a single knob to lock both ball joints at the same time. Loosen the knob and the whole arm becomes adjustable; tighten it and everything locks down. It’s quick to reposition and makes it easy to dial in a precise angle. For lightweight gear like a phone, small LED light, or compact camera, it feels very secure... but it feels like we are asking a whole lot from that single screw.

Build quality is insane for the price. The parts are metal rather than plastic, which gives it a more durable feel and keeps flex to a minimum. That said, the listed 2 kg load rating seems reasonable--this is better suited for lighter equipment than for a heavy DSLR with a big lens... but you could get by in a pinch. I almost wonder if a lighter plasticfiberglass version would be simpler for a phone only mount as this does add some extra weight to a portable setup.

The included phone holder is functional and grips a phone securely. It’s nothing fancy, but it does the job and threads right onto the arm, I like that there are two points that you can attach it to.

Overall, this is a handy little mounting system for things like overhead phone shots, attaching a light to a desk, holding a small monitor, or positioning a camera in tight spaces. If you work with cameras or lighting gear, it’s the kind of inexpensive tool that quickly earns a permanent place in your kit.

Rating: 5/5 stars. Solid construction, flexible positioning, and very useful for the price.

I ordered this as a way to place my camera or my phone to take specific shots with an angle, without me having to hold my phone or my camera.

The shafts seem very strong, which makes me feel relaxed to put my device in there.

The clip is meant for a cylindrical shape, even though it works on flat ones as well (it is not an ideal setup, but it works). I find it a bit difficult to screw each of the parts and using the ball head in a position I'd like. I still need to find the right way to do so, however I believe it will somehow be possible, as the products from this brand tend to be really good.

The basic function of a “Magic Arm” is probably clear to anyone looking for something like this.

This K&F part is very high-quality and sturdy. The fine grid in the middle section helps with stability and should not have a negative effect.

With the clamp (Super Clamp), I can attach the arm (and other accessories) to my little Zhyjun gimbal, which unfortunately has little other option via thread.

The “secretive”, clever detail contains the cell phone clip. In addition to the two threaded sockets for mounting on the arm, it actually also has a “cold shoe”, a holder for a camera flash without electrical contacts. In principle, this allows any camera flash to be attached about 20 cm sideways away from close to the lens axis to enable unleashed flashing. However, this requires either a suitable lightning cable or, for example, a radio trigger.

Overall, this set from K&F is a good addition to the range of camera accessories.

Transparency/Disclaimer:
I participate in the Amazon Vine program, which provides me with products from the Amazon offer free of charge. In return, I have committed myself to provide open and honest reviews of the products.
Amazon values this openness and honesty for the benefit of prospective buyers and there is no pressure to get positive reviews.
In my reviews (whether as a participant in the Vine program or as a normal customer), I refer to the delivered product and generally cannot make any statements about the possible spread of series in quality.
I try to present the perceived advantages and disadvantages of the products and do not flatly repeat information that is already visible to everyone in the offer.

This Arm is but an articulated mounting system designed to offer maximum flexibility in the studio or outside. The combination of arm, clamp and smartphone holder makes it a package ready to use in a variety of situations. Of the Design The first thing that strikes is its solidity. Made mainly of aluminum alloy, the arm transmits a sense of professional robustness. The heart of the device, with a single rotation, blocks all three joints simultaneously. The seal is excellent, the joints are 360° ideal for creative angles or for inserting accessories in tight spaces. The Grip Inside the clamps there are rubber inserts that protect surfaces (such as tripods, desks, etc.) and increase friction. For compatibility, there are 1/4" and 3/8" threaded holes, allowing other accessories to be attached regardless of the arm.

The clamp with camera mount is very robust and makes a very high-quality impression. The workmanship also leaves nothing to be desired. The special feature is the operation of the three joints. They are fixed here with just one wing screw. This makes adjusting the camera colossally easier if you can adjust the camera with one hand and fix the whole thing with one grip with the other, with the maximum degrees of freedom with two ball joints and one hinge. I am very impressed by the function and the execution and award five out of five.

K&F Concept products now have a permanent place in my equipment. Be it filters, bags, reflectors or even magic arms like this one here. And this 9.8 inch Magic Arm with Super Clamp also impresses me across the board.

It is robustly built and offers good features with the unscrewable clamp and phone holder, which results in versatility in use. For example, I use it as an arm for monitors or as a microphone holder. With the clamp, it can be easily attached to pipes or the edge of the table and holds very well and securely.

I haven't used the smartphone holder before, but it is solidly manufactured and offers a secure fit for different sizes.

I particularly like the orange wing screw. With it, you open or close your arm and once tightened, the arm only comes off when there is very strong, tremendous pressure.

For me, the Magicarm from K&F CONCEPT is another great accessory of the usual good quality that delivers very good quality for a good price. Clear purchase recommendation.