Great for crafters and collectors, Studio Designs' Magnifying Lamp features a 3 diopter glass magnification lens so you can enlarge and inspect your work for perfection. The flexible arm, built of steel springs and tension control knobs, extends up to 36". The Magnifying Lamp attaches to any Studio Designs table.Details:Black7.5” x 10” x 36"Flexible arm extends up to 36”60W UL approved for U.S. and Canada13W CFL bulb included3 diopter glass magnification lensSteel spring and tension control knobsClamp mounts easily to any Studio Designs table