Product Catalog: Herman Miller Compatible Parts: Chair Parts: Ergon Parts Ergon is a registered trademark of Herman Miller, Inc. Products HM Ergon Swivel Tilt ControlM.0009.01.BK (Uni-Source Office Furniture Parts) List Price: $109.25/Each View Details HM Ergon Replacement Base KitM.0017.01.BK (Uni-Source Office Furniture Parts) List Price: $207.00/Each View Details HM Ergon Replacement Arm Pads, BK-BlackM.0025.01.BK (Uni-Source Office Furniture Parts) List Price: $34.50/Each View Details HM Ergon Replacement Arm Pads, MT-Medium ToneM.0025.01.MT (Uni-Source Office Furniture Parts) List Price: $34.50/Each View Details Bolt, Flat Head Phillips, 1/4 20 x 1/2 BK-BlackU.0012.04.BK (Uni-Source Office Furniture Parts) List Price: $0.25/Each View Details