The Z327-200-A200 by Hermle is a 200 mL conical tube insert for the Z327-200-BUK swing-out rotor buckets on the Hermle Z307 and Z327 Universal Centrifuges, supplied as a pack of two. It converts the rotor's standard bucket cavity to accept a single 200 mL conical vessel per bucket, enabling large-volume conical tube runs without a separate rotor.