These masterplug led gu10 glass bulbs replicate traditional glass halogen bulbs in appearance and output featuring the latest upgraded ic driver technology they offer a 90 energy saving versus their halogen equivalents whilst the sparkling edge2edge lens maximises illumination the bulbs are a43 rated with a 38 beam angle and are non dimmable specification fitting gu10switching cycles 15000rated a43 average rated life 25000 hours bulb height 53mm bulb diameter 50mm