I took some pictures to show you the Kobalt sockets. From left to right is a 13mm ratchet wrench with Kobalt 1/4" drive, 13mm pass thru socket. next to it is a 1/4" Gearwrench 120xp with 13mm socket. Middle is 3/4" ratchet wrench with Kobalt 3/8" drive, 13mm pass thru socket and a 3/8" Snap On F80 ratchet with 13mm socket. Lastly is the 7/8" ratchet wrench with Kobalt 1/2" drive, 7/8" pass thru socket and a 1/2" Snap On S80 ratchet with 7/8" socket. One thing to mention is the Kobalt sockets actually sit deeper in the wrench than they appear making them even more shallow. Because of the table they are on the do not sit all the way into the wrench. The Kobalt sockets are also mm/sae combo. The 13mm is also a 1/2". As you can see there is a big difference. The last picture is two 1/4" ratchets, one with a deep 13mm socket and the other has the Kobalt 13mm socket with the 1/4" ratchet adapter. I've only used them a few times, but they do work. Not sure they are the same quality as the universal Mac or Matco sockets that remove damaged fasteners, but thats not really why I bought them. I bought them for the spline aspect to use on 12 point spline fasteners.