In the words of Walrus Audio:

The Kangra Filter Fuzz is a true bypass, two-in-one pedal
that provides a thick and spatty octave fuzz, and a psychedelic filter
thats great for sweeps, frequency boost or even envelope filter sounds.
The filter can run independently, or with the fuzz feeding into it. This
is no rhythm players fuzz. Dig in and play dirty with aggressive fuzz
lead lines thatll rip time and space apart at the seams.