From slip to posi? Best bang for the buck?

[Hazieview]

Originally Posted by 85gmcguy

I've been looking at these for a while. Seems like a no-brainer installation.

http://www.summitracing.com/parts/PWT-1910-LR/

I'm dumb so that part kind of confused me...

The Powertrax Lock-Right and Performance Lockers' straight-line performance is equal to a solid spool axle, yet automatically unlocks to allow full differentiation in turns.

?

How does that work? So it is a posi when you need it to be and a slip when you turn....?

If so that may be something I would buy. IF IT WORKS!