Our range Classic Bulbs come from trustworthy manufacturers like Kosnic, Crompton, Aurora, Osram so you know you are getting a bulb you can rely on. Our GLS Bulbs come in both Edison Screw Cap and Bayonet Cap options to suit most applications. Our Classic Golf and Candle Bulbs are ideal for smaller lamps, chandeliers and provide the same light in a smaller shape and size. Available in Bayonet and Edison Screw Cap, as well as smaller versions of the Bayonet and Edison Screw cap. These Halogen Savers are a direct replacement for the Traditional GLS Lamp, which are being phased out.