Mine is bluepoint brand. Your local Snap-on dealer sells them. You want the cheaper version he sells for the thinner wall that works. The adapter from 3/4 down to 1/2" cost about as much as the socket.
yep...i opted for a specific axle hub nut socket, as they're thin walled, unlike the HD 3/4 drive 2 1/8" sockets. they dont need to be super heavy duty and definitely not for impact use. i think the max torque one puts on it is 40somthing ft-lbs.
oddly enough, the 55 i bought stated it was specifically for toyota 4X4s, minis and FJs. it was a touch big, but worked fine to torque spec.