Hanging length adjustable, 12.84~49.84 inch, track rail NOT included. Bulb included, 8W dimmable LED GU10 545lm 90 CRI 3000K warm white 38° beam angle. Bulb replaceable, save a lof of future maintenance costs compared with LED integrated light. Easy to install, universal line voltage track light head, fit in 3-wire single circuit track system. No UV, no IR, safe as accent task lighting for artworks. 2 years lifetime warranty. mirrea 6 Pack Black Track Pendant Lighting for H Type Rail Hanging Cord Adjustable Bulb Included 8W Dimmable LED GU10 90 CRI 3000K Warm White 38° Beam Angle