The filter holder is aluminum and very well made and fits great. Delivery was very quick and the filter came in a sturdy padded box. The filter holder serves me together with the ND 1000 100x100 filter glass in landscape photography for the exposure time e.g. during the day when ingesting water. But also to ban the passing people from the picture when shooting real estate.

Box contents:

- filter holder for 100 mm x 100 mm filter
- adapter ring 67 mm
- adapter ring 72 mm
- adapter ring 77 mm
- 82 mm adapter ring
- padded cardboard box for filter holder

The whole thing makes a very valuable impression overall.
The adapter rings are black anodized aluminum - they are well made, not sharp and the thread can be easily screwed onto the lenses.
In addition to the plastic filter cartridges, the filter holder is also made of black anodized aluminum. Here too, the treatment is excellent. Maybe the quality of the plastic inserts could be better, but this is already complaining at the highest level. The inserts fit all 100mm x 100mm filters with a thickness of 1mm to 2mm.
the packaging was impeccable; Adapters are individually packaged; The portafilter comes in a nice padded cardboard box.
Full points and recommendation for a perfect rectangular filter system at a significantly lower price than some other manufacturers.

The package arrived on time and includes a box with the 7 adapter rings 52/58/62/67/72/77/82 mm and the filter holder. I bought this K&F Holder kit because I wanted a compromise between quality and price. The price can be up to 70 percent lower than other kits. The filter holder is made of aluminium, the only plastic parts that come into contact with the sheet metal.

Scope of delivery: - filter holder for 100mm x 100mm filter - adapter ring 52mm - adapter ring 58mm - adapter ring 62mm - adapter ring 67mm - adapter ring 72mm - adapter ring 77mm - adapter ring 82mm - padded cardboard box for filter holder The set makes a very valuable impression overall. The adapter rings are made of black anodized aluminum - they are well made, not sharp-edged and the thread can be easily screwed onto lenses. Apart from the filter inserts, which are made of plastic, the filter holder is also made of black anodized aluminum. Here, too, the processing is excellent. Perhaps the quality of the plastic inserts could be a tick better, but that's already whining at the highest level. The inserts fit all 100mm x 100mm filters with a thickness of 1mm - 2mm. packaging was impeccable; Adapters are individually wrapped; Filter holder is in a nice padded cardboard box. Full points and recommendation for a perfect rectangular filter system at a significantly lower price than some other manufacturers.

Scope of delivery:

- filter holder for 100mm x 100mm filter
- adapter ring 52mm
- adapter ring 58mm
- adapter ring 62mm
- adapter ring 67mm
- adapter ring 72mm
- adapter ring 77mm
- adapter ring 82mm
- padded cardboard box for filter holder

The set makes a very valuable impression overall.
The adapter rings are made of black anodized aluminum - they are well made, not sharp-edged and the thread can be easily screwed onto lenses.
Apart from the filter inserts, which are made of plastic, the filter holder is also made of black anodized aluminum. Here, too, the processing is excellent. Maybe the quality of the plastic inserts could be a tick better, but that's already whining at the highest level. The inserts fit all 100mm x 100mm filters with a thickness of 1mm - 2mm.
packaging was impeccable; Adapters are individually wrapped; Filter holder is in a nice padded cardboard box.
Full points and recommendation for a perfect rectangular filter system at a significantly lower price than some other manufacturers.

I have been thinking about buying a graduated filter for a long time, although the prices of Nisi, Haida etc. around 150 euros have always put me off.
Then I came across the filters from K&F, because the filters were in a reasonably priced framework, I ordered them.
The extremely beautiful and high-quality packaging should also be emphasized. Here you get an artificial leather case that is lined with fine fabric on the inside and has incorporated 2 magnetic buttons. This case is in a nice padded cardboard box, very valuable and stable so I wasn't really disappointed.

Filter holder:
First of all, it must be said that you of course need a filter holding system for the filter. This is well made and serves its purpose. Here comes the filter holder in a padded cardboard box. The scope of delivery includes the filter holder and 8 adapters in the size 49mm - 82mm.

The filter seems to be of very good quality, comes in a plastic box with a filter holder so it is well protected.
Doesn't seem to have any impact on the brightness settings. No degradation of the quality of my pictures for the moment. Good product

Finally found an ND filter which can be installed inside the Smallrig lightweight matte box 2660.
I did have to remove the holder frame to make it fit. This can be done by carefully pulling appart the frame sides with the lips. In doing so you can op out the filter while keeping the frame intact.
Filter quality seems to be ok and it comes with a very well designed holder with an extraction ribbon which avoids having to touch the surface of the filter when taking it out.