Magnifier Light, Magnification 2.25, Cord Conductor 3, Color Light Grey, Diopter 5, Arm Length 30 In., Lamp Type Fluorescent, Base Weighted, Characteristics Patented Internal Spring K-Arm, Electronic Ballast, Instant-On Switch, Includes 5 In. Optical-Quality Lens, Base Mount Fluorescent Magnifier LightsFor indoor use only. Use for close-up inspection, assembly, rework, and other general small-area applications.All are UL and C-UL Listed.3-cond. cordKFMFeature optical-quality lenses, flicker-free illumination, and distortion-free viewing with heavy-duty magnifier. Fully adjustable internal-spring arm. Min.-clearance bracket allows for almost zero clearance between adjacent benches. Electronic ballast increases light output by 15%. 22W bulb (included) is protected by a nonyellowing acrylic splash guard/diffuser. Light gray color. 6MGH7 is ESD safe.