ElekTek Safety Switch Lamp Holder Half Inch with Back Plate Cover and Screws - Brass by Amazon.co.uk

• B22 (22mm) Bayonet Cap with internal earth and locking screw in base

• 25mm Diameter back plate nipple base plate with 27mm diameter cover and 3 screws

• Maximum lamp holder diameter 32mm. Mounted height 68mm.

• This solid brass B22 (bayonet cap) lamp holder is intended primarily for attachment to any solid, flat surface that can be drilled.

• Made in UK: Solid Brass construction with Solid Brass Shade Ring. ALWAYS REMEMBER: Metal fittings MUST be earthed - when re-assembling after wiring, please ensure Earth Strap on the switch insert sits outside of the lamp holder body as originally supplied - do not squeeze inside the lamp holder body