Snap-On 1" double square - what's it for?

[dockterj]

Somewhere I ended up with a 1/2" drive 1" double square socket (SW432). Besides the obvious (1" square head fasteners) what is this socket used for?

 

[billymade]

This sounds like a good explanation of one application:
http://www.hangartoolbox.com/Tools/71.aspx

 

[arkangel06]

1'' square fasteners.

 

[dockterj]

thanks Billy! I'll probably sell it. $15 - but for arkangel I'll make a special deal - $25

 

[snapmom]

there are bigger ones.