thread clener set at Sears is cheap and worth every penny( under $100)!!! I bought one from Matco but I use them more often then a home mechanic. I will buy the Crftsman set for the house sometime also.Just a option you could use a 1/2 Torque wrench and a reducer from 1/2 to 3/8. I would go to
www.tooltopia.com nd pick up a set of 1/2 Sunnex sockets there Great sockets for $$$$$$$$ and fast shipping.