well packaged...comes with soft case to protect both the phone clip and the 67mm filter.

The clip is mounted to phone using a screw type mechanism. There's a soft rubber material at the end of the screw to protect from damaging the phone. It was easier to align the phone clip from the camera lens side then gently tighten the screw. Clip stays on phone without issue. The included 67mm filter attach to clip magnetically; also stay on phone without issue.

The clip has a camera hotshoe compatible slot at the top. Good spot to add LED lights.

I got my new K&F Concept Clip On 67mm CPL Magnetic Phone Lens Filter Kit today and anxiously opened it to give it a try. My first impression is that this K&F Concept Clip On 67mm CPL Magnetic Phone Lens Filter Kit is a well built camera phone accessory.
It is made of metal, aluminum I think, and is solid. It comes in it's own zippered case with foam packing that speaks of quality too. The nice feature about this K&F Concept Clip On 67mm CPL Magnetic Phone Lens Filter Kit is the magnetic method to attach the filter. The filter itself magnetically snaps into place with a firm grip. There is no concern that the filter may ever just fall off.
The K&F Concept Clip On 67mm CPL Magnetic Phone Lens Filter Kit connects via a thumb screw that tightens onto the camera screen to hold the filter frame secure. This is a bit concerning to me as I would think that if you aren't careful you could over tighten the screw and end up breaking the phone screen.
When I attached the K&F Concept Clip On 67mm CPL Magnetic Phone Lens Filter Kit to my Galaxy S23 Ultra, which has 5 camera lenses, it looks like the filter slightly blocks the bottom camera (Telephoto 1). However, as I switched between the camera zooms and I didn't see/notice any actual blockage of the lens. I will keep an eye on this as I use theK&F Concept Clip On 67mm CPL Magnetic Phone Lens Filter Kit more to see if any thing is ever obstructed by the filter.
The filter lense itself also is well made. It has an aluminum outer ring and fits nicely into the frame and the lens is made of glass that is tinted for the CPL effect.
In all, I give the K&F Concept Clip On 67mm CPL Magnetic Phone Lens Filter Kit a thumbs up, but I do worry about over tightening and cracking my phone screen.

This is a nice set that works well with my Tamron lens with a 67mm filter. It screws on easily and provides additional protection at a reasonable price. It comes with a lens cap and tether which is handy. A nice UV filter that does the job well!

This is perfect for anyone who doesn't want to buy a case that is made specifically for different lens mount systems (Newer, Moment, etc) and just wants to be able to pop a filter on their phone quickly with any case, or no case at all. The magnetic ring is perfect to swap out various ND Filters and stack them for whatever scenario. Over time, I've found the K&F filters to be of pretty consistent quality and definitely useful in any situation.

I recently bought the 67mm polarizing filter for my Sony A6000 in combination with the SEL16-55G lens and am very happy with my choice overall! ✔️ Improved image quality: The polarizing filter reduces unwanted reflections and enhances colors, which delivers impressive results, especially for landscape shots. ✔️ Robust workmanship: The filter feels solid and high-quality, which suggests a long service life. ✔️ Easy to use: Screwing the filter onto the lens is easy and works smoothly. ❌ Difficult to unscrew: Unfortunately, the filter is difficult to unscrew from the lens, which can be a bit frustrating when changing lenses quickly. Overall, the 67mm polarizing filter largely met my expectations.

I recently got the K&F Concept 67mm Black Diffusion Mist 1 4 Effect & Variable ND2-400 (1-9 Stops) ND Lens Filter and it is incredible! This filter has adjustable levels of density, allowing me to get the exact effect I'm looking for. Not only that, but it's multi-coated with 28 layers of Nano-X Series and made with high-grade materials that feel sturdy.

I am very pleased with this 67mm ND filter from K & F Concept. I am using this on a Sony 24mm 1.4 G Master lens (Bonus it will also fit on my 85mm lens). This is great for time lapse photography during the bright afternoons in Florida. Examples of the scenes I've shot are, the summer rains coming through over the water, or of the city scenes at the urban farmers markets, etc., this filter has exceeded my expectations.
I purchased at medium sized backpack from K & F 2 years ago that has been a hearty addition. The backpack has protected my gear on trips to Thailand, Hong Kong, Philippines, and Colombia. So, I figured why not try their other products. I'm looking forward to using these filters for many years to come.
Great buy at a great price.

77mm polarizing filter adapted to a smaller 67mm lens. Fits :)