Round 45mm light bulbs are 45mm diameter and are often referred to as golf ball lamps, mini globes, sphericals or R45. They are ideal for multi arm fittings and small fittings where size is important They enhance the look of elegant fittings and are available in 4 different caps Screw cap ES, Small Screw cap SES, Bayonet cap BC and Small Bayonet cap SBC plus 3 finishes Opal, Clear and Coloured.