Select the type of reinforcing ring.
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None - No reinforcement on this end and no knuckle.
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Bar - Reinforcing bar on this end (width and thickness).
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Section - Reinforcing beam section on this end (moment of inertia, area, and depth of beam).
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Knuckle - Toroidal knuckle on this end (radius and thickness) .
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Knuckle and Bar Ring - Toroidal knuckle and a reinforcing bar on this end.
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Knuckle and Section Ring - Toroidal knuckle and a reinforcing beam section on this end.