Quality, Value, Experience from Trusted UK Seller The ASTO TUBE 1 ceiling light is made from aluminium and is available in white or brushed aluminium finish. The opaque, cylindrical body of the fitting is adjustable and ensures glare-free light of the chosen GU10 or LED high-voltage light sources. ASTO TUBE 1 is ready for direct connection to 230V mains supply. This luminaire is suitable for lamps of energy classes: E - A++