Flos Parentesi

Designed by Achille Castiglioni and Pio Manzu, 1971

Lamp providing direct light. Lamp moves vertically via sliding of a painted or nickel-plated shaped steel tube on a ceiling-to-floor steel cable (4000 mm long).
Fixture head made of injection-molded black elastomer housing a switch. Length of power cord from lamp-holder 4000 mm. Net weight 3 kg.

https://flos.com/en/it/parentesi-on-off/M-parentesi.html 
https://www.archiproducts.com/en/products/flos/powder-coated-steel-pendant-lamp-parentesi_96498