This is a 2" long stem lamp switch that Screws into 1/2" plumbing or conduit pipe fittings 
Attach this into pipe shelving or pipe lamps to control your light
The black knob turns clockwise On/Off with a satisfying click sound

Details:

• Custom engineered lamp parts
• UL approved single circuit, in-line switch
• 6" wire leads
• Rated 6A-120V or 3A-240V

* Easy instructions: either side to + of the plug and other side to + of the light socket  

I Love Lamp