Medium E26/E27 standard base;Rated for up to 600W, 110v-250v;Electrolier size: 1.4 diameter shell;Cap is 1/8 threaded for lamp nipple with set screw;Parrotuncle E26 E27 light bulbs also available in Eileen Grays now

• Parrot Uncle Brass Screw Thread DIY Light Socket Vintage Copper Lamp Holder for E26 E27 Light Bulbs, Golden w/ Key Switch, Short
• Golden Key Short

Parrot Uncle Brass Screw Thread DIY Light Socket Vintage Copper Lamp Holder for E26 E27 Light Bulbs, Golden w/ Key Switch, ShortParrot Uncle