Set of 4 spotlights with 150W E26 sockets. - Spotlight socket E26 type, up to 150W x4 - Spotlight bulbs 75W x3 - Reflector bulbs 100W x4 - Reflector bulbs 50W x4, 1 of which is new - Other: 2 plain E26 sockets Thank you for viewing. These were used in a store previously and have been stored for about 8 years. They will probably light up, but please be aware that some may not work. The black, large socket bodies are 10 cm long. They are the type that attaches to a rail. I don't know if there is a specific standard for them. Sold as a set. Please note that all bulbs are incandescent and not LED.