that looks a lot like the Effetto Mariposa Giustaforza II Pro ratcheting torque wrench.
http://www.effettomariposa.eu/prodotti/giustaforza-family/giustaforza-ii-2-16-pro-deluxe/
The socket you linked is not the one in the picture, the socket linked is only 4" long. (Sk 4421)
The one pictures is this one, it is 10" long (SK 4422). I'm not sure if it is made anymore or not as I don't see it in the SK catalog...
You can purchase it here
http://www.shop.pbtools.us/Slot-Chisel-with-bent-shaft-bilateral-cutting-edge-804-Bent.htm
and here
http://www.amazon.com/PB-Swiss-Bent-Slot-Chisel/dp/B001D2Q7AG
Not sure what ratchet you have but I have a Mac XR8k 3/8" Drive ratchet. It has 2 screws that go through the ratchet head and screw into the plate on the drive side of the ratchet.
I don't have any pictures right now as I'm at work but found some through goolge for reference.
Someone may...
Schmitz has their pliers on sale (20% off) until December 31 through their website. The discount is taken automatically.
http://www.schmitz-zangen.de/index.php?lang=de
They also have a better selection of their pliers on Amazon.de & Amazon.co.uk with the discount applied.
Amazon.de...
They are not, the Ernst has slots that that vary in size from smallest to largest (or vise-versa) to accommodate different size wrenches. This ends up wasting a lot of space on the smaller wrenches, some end up taking up more room than they would just laying flat in the drawer.
The slot sizes...