The Westinghouse 50/200/250 Watt A21 3-Way Incandescent Light Bulb allows you to choose from 3 levels of light. Multi-purpose 3-way bulbs function well for ambient lighting general and task lighting applications. The A21 bulb features a soft white finish producing brilliant illumination. Perfect for 3-way socket table and floor lamps. Westinghouse is a trusted global brand. Westinghouse knows lighting and offers products with exceptional quality reliability and functionality. Product reference number 03902.