Westinghouse T3 20 Watt Clear (2900K) G4 Base Halogen Single-Ended Light Bulb 0620900Incandescent alternative to halogen lamps. Xenon low voltage light bulbs have long life, crisp white light and are perfect for general illumination or accent lighting purposes available in a variety of shapes, styles and wattages. To help you find the right bulb for the right application, see Westinghouse’s full offering of JC bulbs available in wattages ranging from 5 to 100 and have either G4 or GY6.35 bases. JC type halogen light bulbs are low voltage pin base bulbs that can be used in puck lights, under-cabinet lights, desk lamps, display lighting, accent and landscape lighting. 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.