XIANQI UL Standard. Light socket has an electrical rating of 110 V / 4A and 60WW,fits for 1.1 inch/2.7cm lamp cap. Easy to Wire Up. Built in thread nut and screws,well constructed with 3 parts,easy enough to install with your light fixture. DIY Lamp Projects. Simple upgrade to your old lamps,such as Edison bulb,CFL bulb,LED bulb,hanging light,pendant lamp,outdoor light. Great bang for the buck.Multi-pack lamp holders for your desk lamp,bed lamp,dining-room lamp,bar counter lamp,fancy lamp,even for future projects. Improve Atmosphere.Whether family drinking habits in dining room,industrial look in office,beauty light on dresser,warm and sweat beside bed,or regular lighting system, light socket helps you enjoy the moment. Product description vintage set for fancy lamp projects material:aluminum color:black type:turn knob, pull chain individual size:2.8 inch x 1.5 inch / 7 cm x 3.8 cm pack:4 pack The right process to change a light socket Tool:wire strippers, screwdriver, maybe a roll of electrical tape Step: 1-Remove old lamp hardware. After turning off power switch,just wiggle old light socket, pull up the top cap,then cut off wire to remove old switch. 2-Prepare wire. Using wires trippers,cut the insulation from around each wire,twist them up and keep them nice and solid. 3-Accept new light socket. Wrap wire around one terminal in a clockwise motion,then tighten the screw with screwdriver.Repeat these with another terminal. 4-Test. Put cover on and snap it back down into the socket base,put on the new light,open power switch.You successfully complete light socket replacement when it lights.