MAC sockets are significantly thinner. They're thinner both on the square drive end AND the business end. I've had this MAC socket for quite awhile and never noticed how much thinner it was than until I started interchanging it with the other two sockets on the same Craftsman spin handle. I have some interior screws in my Buick that I thought were 9/32'' on the head, but as it turns out, they're 7mm on the head. I don't have a MAC 7mm to compare them with, but to be fair, the 9/32'' is the next size LARGER than 7mm and yet the MAC is still thinner than the other two. If you look at the MAC on the end of the spin handle drive, it's not much larger in diameter than the drive itself. Thinner is better when it comes to sockets. Thinner gets you into places thicker sockets won't. There's definitely an advantage to having a thin socket, especially in 1/4'' drive.
The sockets I used were:
1. MAC M96R (9/32'' - 1/4'' drive) Shallow
2. Kobalt 338114 (7mm - 1/4'' drive) Shallow
3. Snap-on TMMS7 (7MM -1/4'' drive) Semi-Deep
^ MAC/Kobalt
^ MAC/Snap-on
^ MAC/Kobalt
^ MAC/Snap-on
^ MAC
^ Kobalt
^ Snap-on
^ MAC
The sockets I used were:
1. MAC M96R (9/32'' - 1/4'' drive) Shallow
2. Kobalt 338114 (7mm - 1/4'' drive) Shallow
3. Snap-on TMMS7 (7MM -1/4'' drive) Semi-Deep
^ MAC/Kobalt
^ MAC/Snap-on
^ MAC/Kobalt
^ MAC/Snap-on
^ MAC
^ Kobalt
^ Snap-on
^ MAC