Mobius Loop - Square 2/4 twist

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.