Add bright LED illumination at home, in the office or in the shop with this versatile 21W - 84 LED task lamp – the perfect product when additional lighting is needed The all-metal articulating arm with 3 points of adjustment including a rotating head allows for perfect positioning of the dimmable light for any task. The articulating arm includes two 15.75” long arms that raise to a 30” total height - perfect for adjusting to all types of lighting needs Control buttons on the lamp include one for on/off and two to increase or decrease brightness of the lamp This task lamp comes with a sturdy table clamp that can be attached to surfaces from .25” to 2.45” high This large task lamp measures 23”L X 3.375” W X 1.75” H