Creative Hobbies Phenolic 3 Way Turn Knob, Medium Base Light Socket, Full Uno Thread and Ring, 1/8 IP Thread Cap -Pack of Two Sockets Pack of Two Medium base E26, Phenolic 3-Way Turn Knob Lamp Sockets for one low price! 250W-250V, 1/8 IP Cap, Medium Base Sockets w/Uno Thread and Ring. UL Listed Rated for up to 250 Watt Use these sockets with standard base three way light bulbs