Lamp holder E27, screw thread M10x1, 52mm, black | 257.000027-0410
DOITOOL 6pcs E27 to Gu10 Lamp Holder Adapter Converter Portable Light Bulb LED Bulbs White Light Bulbs E27 to Gu10 Adapter LED Lightbulb E27 Screw PC Plastic White Lamp Holder Fixture -