ElekTek Special Safety Switch lamp Bulb Holder B22 BC Bayonet Shade Ring, 10mm/M10 x1 Bottom Entry, Brass, Child Safe Push Bar Locks Off to Cut Power if not Inserted Made in UK

IMPORTANT: Switch will ONLY work when a bulb is fitted - Patented Safety Switch Push-Bar Design - MAKE SURE lamp holder is fully screwed together when assembled so that centre Safety Pin correctly depresses when a bulb is installed. For all types of B22 (22mm) Bayonet Cap Bulb: Incandescent, LED and Halogen Made in UK: Solid Brass construction with Solid Brass Shade Ring. ALWAYS REMEMBER: Metal fittings MUST be earthed Dimensions: PLEASE CHECK YOUR THREAD SIZE BEFORE YOU ORDER - choice of 10mm (M10) or 1/2" (26 TPI) threaded bottom entry - as a guide, newer lamps will 'tend' to be 10mm (metric), old lamps will 'tend' to be 1/2" (imperial); Height: 63mm, Diameter: 32mm (Max.); Cable/Flex aperture/opening approx. 7mm Suitable for lighting circuits only - T2 temperature rating (220°C). Fully approved to BS 7895:1997