I recently purchased a snap-on 1/4" drive ratchet/socket set from a snap-on truck. I wanted a 2018 set so I made sure to look at the date code on the ratchet and a couple of the sockets. All 3 were 2018 so I made the purchase. The following day I was looking at the set and found 4 sockets from different years, as far back as 2010. Is this normal? I just figured everything in a set would have matching date codes.
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Has a snap on 1/4 drive socket changed from 2010? i could maybe see it if you got a mix of old versus current snap on script but, it has been awhile since that change. 
