An update on the shower button presser.
I had to replace the nuts and bolts that came with the suction cups, as one of the original nuts came loose in the shower and was lost.
I have replaced them with M4 stainless machine screws and locking nuts.
I had to replace the nuts and bolts that came with the suction cups, as one of the original nuts came loose in the shower and was lost.
I have replaced them with M4 stainless machine screws and locking nuts.

NYLOC NYLON INSERT LOCKING NUTS M3,4,5,6,8,10,12 A4 MARINE GRADE STAINLESS STEEL | eBay
A4 Marine Grade Stainless Steel Nyloc Nuts. Hexagon nyloc nuts with a self locking nylon insert. Nyloc Garni en Écrous de Blocage M3,4,5,6,8,10,12 A4 Grade Marine Acier Inox. Nyloc Einsatz Sicherungsmuttern M3,4,5,6,8,10,12 A4 Marine Klasse Edelstahl.
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