About the Elco Lighting ET550W Low Voltage 24" Thin Goose Neck Track Fixture with Round Solid Shade WhiteThis attractive track light from Elco has a versatile thin goose neck design that looks great with any decor. With this track light"s integrated electronic transformer your light comes ready to be installed. This light accepts a lowvoltage MR16 bulb (sold separately) to provide directed illumination to your room. The 24" goose neck allows you to adjust and angle the light to where it"s desired.Works with Elco and Halo single circuit and dual circuit tracks.