The Introvert was a very interesting design. This folder incorporates both a Perrin-style index hole and a flipper. Although it might be easy to think of this design as a pure MBC-type design, Sal and Eric see more potential (utility) uses. Apparently, their main attraction to see if the design could be made was ‘it’s never been done’.
The approximate specifications of the Introvert concept model are:
Overall Length: 18 cm / 7.08 inches
Edge Length: 5,7 cm / 2.24 inches
Blade Length: 7,2 cm / 2.83 inches
Blade Thickness: 0,3 cm / 0.19 inches