Set of 3 industrial pendant lights

Set of 3 industrial Habitat pendant lights in aluminum and reinforced glass. 1990s/2000s. They are electrified. Black cable + aluminum cover for ceiling. They are in good condition. Just a few points on the circle that holds the glass plate with the aluminum bowl. Maybe it comes off with the right product because they have always been installed indoors away from any humidity. Diameter 40 cm. Height excluding electric cable 37 cm.