ElekTek Special Safety Switch lamp bulb Holder B22 BC Bayonet Shade Ring, Brass, Back Plate Mount (CNC Brass), Cover and Screws, Child Safe Push Bar locks OFF to cut power if not inserted Made in 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