For sale is a genuine Herman Miller Aeron stool footrest / foot ring, removed from a Herman Miller Aeron counter-height stool. This is the original OEM adjustable foot ring designed for Aeron drafting and counter stools. Outer diameter: 18 inches. Fits column diameter: up to approximately 2.5 inches. Material: metal ring with integrated support arms and locking clamp. Adjustment: slides vertically on the stool column and locks securely in place. Herman Miller Aeron Stool (counter height). Also compatible with Aeron bar-height stools (ring is the same; mounting height differs). Condition: Pre-owned, good working condition. No cracks or structural damage. Minor cosmetic wear consistent with normal use. See photos for exact condition. Included: Foot ring assembly only. Chair, base, and column not included.