MK-P-T45M2: MacBook Air Charger T-Tip, 45w Magsafe2 Replacement Power Adapter MacBook Air 11-inch & 13 inch

MacBook Air Charger, 45w Magsafe2 Replacement Power Adapter With Plug Converter of Extension Cord for MacBook Air 11-inch & 13 inch ( For Macbook Air Released after Mid 2012 )

Is this MacBook Air charger compatible with the charger extension cord? 
-The prongs of the Macbook Air charger are detachable and you can use an original extension chord, that means the our MacBook Air charger work with the Apple extension cable.

How long is the cord? What's the Size of this MacBook Air charger?
-68 Inch long for the cable, and 2.6*2.6 Inch for size of Macbook Air charger

Which compatible models will the MacBook Air fits on?
-MacBook Air (11-inch, Early 2015)
-MacBook Air (13-inch, Early 2015)
-MacBook Air (11-inch, Early 2014)
-MacBook Air (13-inch, Early 2014)
-MacBook Air (11-inch, Mid 2013)
-MacBook Air (13-inch, Mid 2013)
-MacBook Air (11-inch, Mid 2012)
-MacBook Air (13-inch, Mid 2012)
-Macbook Air (MD592LL/A)

What is the Compatibility?
-45W power adapter with MagSafe 2 style connector.