Snapmatic standard bit module

I had to buy a second one because there wasn't enough slots/holes. The set I have had for years (probably over 20) had 33 bits (including a short bit extender).(I knew there wasn't a slot for a bit extender in this module.) Plus a few spare Philips number 2, as 90 percent (at least) of the screws I come across are this type and size.