3 Pcs White E27 To E14 Lampshade Light Shade Collar Ring Adaptor Bulb Holder UK | eBay
Plastic Bulb Holder Fasteners Washers | Plastic Ring Adaptor | Lamp Washer Black - 1pc - Aliexpress
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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 Adapter Black White Light Shades Collar Ring Adaptor Bulb Holder Lamp Shade Accessories - Lamp Covers & Shades - AliExpress