For sale is a used lot of 10 Snap On Sockets. T he drive size is 1/4″. The sizes are: 9/16″, 1/2″, 7/16″, 3/8″, 11/32″, 5/16″, 9/32″, 1/4″, 7/32″, and 3/16″. There is both 6 and 12 point. There are various sizes and you can see all the sizes on the white slip in the photos.