Easy to install, fit in H style 3-wire single circuit track system, track rail NOT included. Light Direction Adjustable: Adjust the positioning with a horizontal rotation range of 350 degrees and a vertical rotatable range of 90 degrees. Bulbs not included: H Track Lighting Heads work with standard E26 light bulbs, up to 60W max. Easy bulb replacement(Bulbs Not Included). H Type Track Compatible: Specifically designed for single-circuit H-type track lighting systems(Track Rail Not include, not compatible with J or L track). 3 Years Service: Enjoy peace of mind with our extended Service, ensuring long-lasting quality and performance. H Type Track Pendant Lighting Black & Brushed Brass Industrial Ceiling Track Hanging Light Fixtures Pendant, Compatible with H Type Track Lighting Rail E26 Socket,3 Pack (Bulbs Not Included )