Use a Smart Dumbbell shower drain removal tool by removing the drain cover, inserting the appropriate end of the tool into the drain so that it engages the crossbars inside it, placing a crescent wrench on the middle section of the tool and turning counterclockwise to release the drain. Plumber's putty around the base of the drain often makes it difficult to turn.
Another shower drain removal tool is the drain key. It does not use the crossbars to loosen the drain, but it requires you to tighten a bolt that spreads the drain shoes against the inside of the pipe. Once the shoes are tight, use a crescent wrench on the hex nut to turn the drain and remove it.
Rectangular shower drain cover removal tool?
I need to remove the rectangular drain cover in the shower.
There are no visible slots for screws/bolts. The drain cover is square and is 3.75 inches per side. There are 5 round drainage holes on each side for a total of 25. Not sure of the brand - may be Kohler or Hansgrohe.
Any info about the tool type, tool name and an online source would be great. Thanks!