The Kosnic LED lamps are uncompromising replacements for halogen lamps. The unique LED lens and Chip On Board technology deliver the same ambience as halogen, while delivering huge energy savings over halogen lamps without compromising on brightness. Save energy up to 85% compared with halogen lamp. Replacement for GU10 and G5.3 halogen lamps. G5.3 requires 12Vdc Constant Voltage LED Driver or can be used with most 12Vac transformers for halogen lamps. High lumen output. Long life of 20,000h. Instant start. Negligible UV output. Mercury free. Dimension: Height: 24mm x Width: 75mm