Westinghouse T3 100 Watt Clear (2900K) RSC Base Halogen Double-Ended Light Bulb 0497100 Double-Ended Halogen light bulbs produce a bright white light making them ideal for use in task or general purpose lighting. These double-ended halogen bulbs offer long life lasting up to 2,000 hours. To help you find the right bulb for the right application, see Westinghouse’s full offering of double-ended bulbs available in wattages ranging from 75 to 1500 with RSC (recessed single contact) or Metal Fin bases. Double-ended bulbs are commonly used in work lights, security lighting, high-end accent fixtures and torchiere table or floor lamps. These bulbs should not be touched with bare hands. The oil from skin can create hot spots on the glass that reduce the life of the bulb.