The LED track light head is designed for use with track light systems. It snaps easily into place along the length of track. The head can be adjusted, making it ideal for accent and general lighting. The Black finish is a clean update for any residential or commercial application. The warm white light uses 10W and is equivalent to a 50W bulb. 450 lumens. It is dimmable down to 10%. this track head is compatible with halo track systems only.