Check the listing for details. Herman Miller Aeron Chair Seat Bolt Hip pivot bearing part screw UAE00M-BK Set. Color: Graphite, Condition: New. Listed at 39.95 USD. GENUINE Herman Miller Aeron Parts - Parts only - No Chair UAE00M-BK hip pivot bearings for an Aeron chair - Graphite - Pack of 2 SEE PICTURES OF THE ACTUAL PART - PART #20 on Diagram UAE00M-BK Fits all three sizes of the Herman Miller Classic Aeron Chairs - NO CHAIR IS INCLUDED Aeron Fit / Size Chart Brochure Colors Adjustments Use & Care Manual PostureFit Assembly Enviromental Contents Aeron Design Story Aeron 12- Year Warranty Video Adjustment Information View these QuickTime videos to learn about the ergonomic adjustment options available on Aeron seating. Instructions shown are for all possible adjustments; specific adjustments vary according to chair model. How can I determine my chair size if the label is gone? - To determine the size of your chair, feel underneath the top back lip of the chair's backrest for a number of bumps. 1 bump is A, 2 bumps are B, and 3 bumps are C. One can also measure the seat pan width: Small A is 19 inches wide, Medium B is 20.25 inches wide and Large C is 21.5 inches wide.Availability: IN STOCK and Ships within 1-2 business days from San Diego (Poway) ONLY FOR THE CLASSIC STYLE AERON - Not the Remastered Version Shipping Information Continental US Ground shipping is $29.95. Hawaii, Alaska and Puerto Rico is $39.95. USPS Mail Shipping (US PO Boxes) is $39.95 No Shipping to Canada We can only ship in the USA. CLICK HERE TO SEE OUR OTHER HERMAN MILLER & TEMPURPEDIC OFFICE CHAIRS! MASTERCARD, VISA, DISCOVER, AMEX & PAYPAL PAYMENTS ACCEPTED How can I determine my chair size if the label is gone? - To determine the size of your chair, feel underneath the top back lip of the chair's backrest for a number of bumps. 1 bump is A, 2 bumps are B, and 3 bumps are C. One can also measure the seat pan width: Small A is 19 inches wide, Medium B is 20.25 inches wide and Large C is 21.5 inches wide. ESTIMATED SHIPPING TIMES WITHIN THE CONTINENTAL USA Shipping time is not guaranteed. 1-2 Day Express shipping is more. Vitalityweb accepts VISA, MC, AMEX, DISCOVER, PAYPAL, and in store payments. If you have any questions, please contact us BEFORE buying! eBay sales have a 30 day return policy for products returned in new condition in the original packaging with a 15% restocking fee. Items have no guarantee from Vitalityweb. Any applicable warranty will be handled and covered directly through the manufacturer. All sales have to be completed/paid for within 7 days of purchase. THANK YOU!