Golfball and Round Light Bulbs
The golf ball light bulb gets its name from its small, round shape, generally only 45mm in diameter. Golf ball light bulbs are sometimes referred to as round light bulbs, although this is a vague term that sometimes includes other types of light bulb (globes, for example). You will most commonly find golfball light bulbs used in smaller lamps and light fittings, where a standard GLS bulb would just be too big. Available in a range of caps including B22, E27, B15 and E14.