| Billy
Try to find a very cheap tool shop/store.
I got my sockets from a trade show stand, the type that sells all sorts of tools chaep, there with 3/4 drive and cost me £5 each and a 1/2 to 3/4 adaptor cost me £4. I had the Chaps at work skim the sockets so that they fittes straight on the socket, ie removed the bevel from inside the socket. | 
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