On page four the small box is a KRA-251A the large box has no marking but I think it is a KRA-24. The large box is 20"x8"x7 1/4" (LxWxH). It has a removable tray inside.
I have many small toolboxes that I have accumulated over 50 years. I like them for storing specific items. I also use them to make small portable tool kits that I scatter around the garage and house. Some of the small portable tool kits are for friends who are always coming over to borrow tools for a project they are working on.
Thanks for the info.
I found online (for other interested) the boxes to be:
KRA-251A to be 18,5" x 6,625" x 5" (random old page) Are you small box the same size?
KRA-24 to be 19,875" x 7,75" x 7,5" (On SO's own page)
It sounds pretty right that the big box could be KRA-24.
I have seen that the some models did change sizes like the KRA-24 actually.
Just looked at random catalogue:
KRA-24 (1973) 21 1/8" x 8 3/4 x 9"
KRA-24 (1978) 19 7/8" x 7 3/4 x 7 1/2" (which is the same size they have today)
"
Some of the small portable tool kits are for friends who are always coming over to borrow tools for a project they are working on."
That's so kind of you
I am currently looking for a toolbox there is around 35cm-40 long (13,78" to 15,75").
Found the KRA-279 (15,1875" x 5" x 2") and the KRA-104 (14" x 18,5" x 2,5") to be in the range but ain't sure where to buy it since SO don't sell the smaller boxes anymore. The closest to my need is actually the KRA-24