Snap On Heavy Duty Boxockets

[v8garage]

Do any of you Snap On collectors have a set of the vintage Heavy Duty Boxockets? I remember seeing some of the box end attachments when digging through old tools in the past but the handles were never with them so didn't know what they were until I saw this in the 1929 catalog.

 

[chad s]

I have one of the late 20's attachments, its 1-5/8". I dont collect blue point though, ths just came in a lot of other tools.