1.Each light bulb was packaged well in individual box in one overall box 
2.They always fit majority himalayan salt lamp,15 watt,the socket is E12 
3. Durable and longer lifetime 
4.This light bulbs is can be adjusted the brightness by dimmer switch controller 
5.Good heat dissipation and low energy consumption 

Installation Process of Himalayan Salt Lamp 
1.Take out the salt lamp cord from your salt rock lamp 
2.Screw E12 15 watt light bulb into the power cable fitting 
3.Gently push in the metal clips and insert the hole until the metal clips spring into place 
4.Simply plug in to your wall outlet, ensuring the dimmer switch is placed in the off position 
5.Then you could adjustable the brightness with the dimmer switch what you need