Downloaded the 2007 Kincrome Catalouge got mesmerised for a couple of hours....but found the part number for:

13626M: 8 pce metric hexagon socket set 5, 6, 8, 10, 11, 12, 14, 17mm

or HS10M 10mm hexagon socket

all 1/2" drive - which works for me with a 1/2" torque wrench.

I guess the ARP stuff was hard as the socket had to get down the stud to the nut on the head and no socket was deep enough?