Alvin G2540-B Swing-Arm Lamp, Uses Bulbs with E26 Screw Base Up to 100W Which Can Also Be LED or CFL, Bulb not Included, Spring-balanced Arm, Black Color Swing-arm lamp with a ventilated 6.5 inches diameter metal shade with double baffle to reduce glare. Spring-balanced adjustable arm locks securely in any position with a 32 inches extension. 2-way mounting clamp for tables up to 1.5 inches thick. Color Black/Gray. Shade Size under 10 inches. Uses bulbs with E26 screw base, up to 100 W (Bulb not included)