How do I remove this one? Around the entire perimeter of the cover, there are no setscrews, it's just nice clean chrome. It turns slightly in either direction to open and close the drain stopper, through a linkage. I'm a little scared to try to pry it off, or to just "turn really hard" in one direction or the other...there must be a trick. There's no brand name on the cover, though other components in the tub are from Drake and Grohe.
Or should I even be trying to take it off? It's impossible to snake the tub through the drain, because there's a plastic nonremovable baffle just under the drain cover.
The drain is probably plugged with hair and bleach dissolves hair. So rather than attempting to remove parts that some designer had to make look beautiful rather than functional just put a cup of bleach in the drain and let set for about 20 minutes and then add a gallon of hot water. Repeat if the drain remains partially plugged.