This halogen MR16 with a GU10 twist and lock base casts a less harsh glare when compared to other MR16 halogen lamps. Halogen lamps deliver a crisp, white light; not only is the quantity of the light greater than a standard incandescent of comparable wattage, but the quality of the light creates a higher contrast for reading and other tasks. All of our halogen lamps are dimmable and can be used in conventional incandescent dimmers.