Rotating Shelf Adjustment Collar

An adjustable support for a display fixture, the adjustable support comprising:

• a collar defining an axial passageway;
• a quick-release mechanism accommodated by the collar, the quick-release mechanism comprising a clamp plate and a biasing member, the clamp plate comprising an inner cylindrical surface defining an axial passage of the clamp plate;
• and
• wherein, with the adjustable support disposed along a central pillar of the display fixture, the central pillar extends through the axial passageway of the collar and the axial passage of the clamp plate, and the clamp plate is adjustable between:
• an engaged state, where the axial passage of the clamp plate is not axially aligned with the central pillar and the inner cylindrical surface at least partially engages the central pillar to secure a position of the adjustable support along the central pillar, and
• a disengaged state, where the axial passage of the clamp plate is moved toward axial alignment with the central pillar and the inner cylindrical surface is moved away from engagement with the central pillar for adjusting the position of the adjustable support along the central pillar, the biasing member biasing the clamp plate toward the engaged state.