Solid Brass Angle Batten Lamp Holder Base diameter 48mm Maximum height 48mm – 2 Fixing holes on 40mm centres. B22 (22mm) Bayonet Cap Earth terminal Shade Ring – suitable for bulbs up to 200W. Ceramic interior Brass plunger contacts. Made in the UK. This solid brass B22 (bayonet connector) angle batten lamp holder is intended primarily for attachment to a flat surface. This product is suitable for lighting circuits only. T2 temperature rating (220°C). Before installing, switch off electricity at mains.