This version uses two intertwined Mobius strips to enclose a volume. It's a bit of a deviation from the rest of the series, but who am I to judge the customer's aesthetic preference?
This Mobius loop has a square cross section and 1/2 twist. The side is 1/4 inch wide and the loop's centre-of-volume radius is 1/2 inch.
3.19 w x
3.438 d x
1.256 w x
1.354 d x