No, the ND filter from the magnetic set is an ND1000 (increases the shutter speed by a factor of 1000). However, it would also be technically difficult to implement a magnetic, yet adjustable, ND filter. 

Hello, there is a magnetic adapter ring included. If the MCUV filter is not required, the magnetic adapter ring can be used to attract the CPL or ND1000 filter directly. 

1. The magnetic attachment ring cannot be connected to MCUV; 2. The use of the product is: magnetic attachment ring + CPL + ND1000; or MCUV + CPL + ND1000; 3. Magnetic filters cannot be connected with other brands of filters, and can only be matched with K&F's magnetic filters; Additional filter/Lens cap size: 1.after magnetic attachment ring/uv/cpl: with the same size filter 2.after nd1000, can't overlay filters. 

Now switch your filters in the seconds with K&F Concept Magnetic Quick-Swap Kit. As a photographer, you know all about the waiting game: those times when utmost patience is required to capture that once-in-a-lifetime image. Every second is important to you ,meanwhile, your heart is racing because you know you have just milliseconds to win your race against time or tide. K&F Concept has announced a magnetic camera filter kit to reduce the time it takes to swap out lens filters literally in seconds, never missing any wonderful moment. 

( As the lens are not magnetic, the magnetic base is needed) Screw the uv filter(or the magnetic adapter ring) on your lens, then attach your other filters in one second~ 

1x Filter ring 1x UV filter 1x CPL filter 1x ND1000 filter 1x Filter pouch 

Hi, the K&F Concept magnetic filter set can compatible with Kase , but also you can try it on Freewell system, thanks