My 1/4" Halfords ratchet fell apart when it was dropped a couple of feet. Bought a repair kit a few months ago (warranty was only on non moving parts) for a fiver and all good again for a while. Now it is dodgy again. The quality of the sockets is fine but the ratchets are rubbish. Give me Bahco any day.
The sockets are OK but comparing them for instance to Facom sockets you can soon see the difference. The Facom 12 points fit a lot snugger on the head of bolts also the mark left by the socket seems further in on each side ponit of a bolt head. But hey the Halfords are a shed load cheaper and I don't really here of them exploding from high torque so for the price I guess they are OK.


.
I'm not sure what specialist info you would want when buying a socket set?? If buy off a proper tool dealer then maybe, but how many people have access to one of those?