TCP Normal Power Factor (NPF), 4W Electronic Compact Fluorescent Spring Lamps. Available in 2700K, 3500K, 4100K, 5100K and 6500K color temperatures. Select E26 medium base or candelabra base. 8000 Hr. Rated Life. 4W - Replaces 25W Incandescent. Lead free glass. For use in Chandeliers, Bare Bulb Fixtures, Wall Sconce, Desk Lamp, and Mirror Lights