The Glo-Ball Table Lamp by FLOS provides diffused lighting. The diffuser consists of an externally acid-etched, hand blown, flashed opaline glass and a die-cast aluminum threaded ring nut with anodized finish. 30% fiberglass reinforced injection-molded polyamide base. Gray painted, die-cast aluminum diffuser support. Switch located on cord with On/Off for 13 and 17.7 Inch options. Smaller sizes can be plugged into a socket and wired to a dimmer wall switch.