【Lighting rail】：H track lighting is only compatible with h type 3-wire- single circuit track system. 【Smoothly Dimming】: Dimmable warm track light head can be smoothly dimmed from 10% to 100% through dimmers. 【Adjustable Angle】: Modern lighting fixture's direction can 350° horizontal and 90° vertical rotation so that the LED lighting can be easy to install and use.