Like the Spin Clean, only better. The Knosti uses goat hair brushes that really get into the grooves, instead of pads that don't get much deeper than the surface of the record.
Choose - with the drop down menu - the kit with fluid, or without if you'd like to use your own recipe. Replacement brushes and Knosti fluid are available too.
The version (Gen II) with crank handles includes fluid.
Check out this very good video on YouTube: https://youtu.be/VPFgcdRc6x0