IKEA SEKOND socket, max 60W, E26 type, simple design for versatile use. Set of 2. I've used them for a few days, and there are no problems with their use. There is little noticeable dirt. - Brand: IKEA - Model Name: SEKOND - Voltage: 100V - Frequency: 50-60Hz - Maximum Output: 60W - Socket Type: E26 Thank you for looking.