Markon Suction Cover - 2 Ring - Chrome - Suits Englefield Kohler

Markon ring style spa bath suction cover.
Used in Englefield / Kohler spa baths and others.

To remove:
Locate the slightly raised bump on the outer lip of the suction cover at the base against the bath. This is the position of the locking arm/latch. See pics for this bump and the locking arm.
Use a skewer or similar to lift the spring loaded latch away from the bath through one of the side slots.
Once lifted, simultaneously twist the cover anti-clockwise 90 degrees to release the cover.

Chrome is a coating applied through electrolysis to a base material such as brass or plastic.
These parts are chromed plastic