Weird Crowfoot Wrench?

[SCscoutguy]

I found these in the bottom of a box of mostly snap on tools I bought today. Most of the crowsfeet are the normal kind I am used to but two of them are different from the others and I have never seen one like them. They are probably a common tool I just have not encountered yet. Can anyone shed some light on to how these two are used?

 

[gtlaw]

they go on a torque wrench

 

[plewlandsbob]

My guess is that they are for fitting onto the end a torque wrench that uses interchangable ends. Possibly for hydrualic lines in aviation applications?

 

[SCscoutguy]

they go on a torque wrench

Well I guess that means I will never have a use for them.
http://www.srtorque.com/Products/SpecialtyandSupport/Product Pages/oe.html

 

[Tarheelgarage]

Those two are used on torque wrenches that are set to a "fixed" toque value

 

[6-Speed]

... or adjustable?

http://www.srtorque.com/Products/SystemsandTools/Product Pages/CCM.html