8 Pieces Lamp Shade Ring Collar Lamp Ring for Shade, Replacement Adapter Ring, Retainer Ring for E26 Light Socket with Diameter 1-1/2 Inches (39 Mm) for Lamp Holder Fixture (Black, White) :
E27 Lampshade Ring - Light Shades Collar Adaptor Bulb Holder Lamp | Fruugo UK
2 Color E14/E27 Screw Lampshade Lamp Light Shade Collar Ring Adaptor Bulb Holder | eBay
Pack of 2 Metal Reducer Ring Plate Light Fitting Lampshade Washer Adaptor Converter : Amazon.co.uk: Lighting
5pcs G9 Light Socket Rings Lamp Shade Holder Adapter Ring Light Fixtures White 782685847766 | eBay