This Nickel Light Socket is perfect for antique restorations and vintage fixtures. These sockets are more traditional with a turn style on/off key on the side. Turn Keys (or turn knobs) are typically attached to the same size shaft and can be changed or extended. Changing the key of a socket can make a subtle yet impressive change to the appearance of the socket. Also, The medium base allows for a 1/8 IPS threading (the standard for most applications), and can withstand a maximum of 660 watts or 250 volts. So, whether your building or repairing lamps, this Nickel Light Socket will help maintain that vintage appearance.