This bulk-buy value pack of 5x Crompton Lamps 8.5W dimmable LED GLS light bulbs with BC-B22d bayonet (22mm) fittings are direct replacements for traditional 60W light bulbs, but have the potential to reduce your home lighting bills and reduce the frequency of needing to replace your light bulbs. Whereas a traditional light bulb would use 60W to produce 806lm, this LED version uses just 8.5W equating to an energy-efficiency of 95lm/W. This high-performance LED light bulb sports a lightweight thermal plastic shell that is specifically designed to dissipate heat very effectively. This reduces the light bulb's running temperature and places less strain on its components resulting in a longer life span. With a long life of 15000-hours, this LED GLS light bulb boasts an incredible 8.2-year lifespan if used for 5-hours a day. These light bulbs don’t need to be replaced as often which results in less money spent on replacement bulbs, and less time spent replacing them, too. This dimmable lamp features DuoDim™ Technology making it compatible with most leading and trailing edge dimmers. Cool white (4000K) bulbs produce a cooler, crisp light and are well suited to more stimulating environments. This makes them great in kitchens, workplaces and is also excellent for bathrooms as there is no colour cast; so applying makeup is much easier. With a size of 60mm diameter with 110mm height, this LED GLS light bulb will retrofit directly to any existing BC-B22d fixture; whether that be smaller domestic light fittings such as ceiling lights or floor lamps or up to large-scale commercial installations.