These Dupont Instruments 11053 Swinging Bucket Adapters w/ Sorvall Instruments 00833 Inserts are in used condition and are guaranteed to be fully functional. Listing is for a quantity of (4) bucket adapters and (4) inserts as seen in photos. We urge customers to view all photos as they show overall condition, included accessories and useful information. Please feel free to contact us with any questions.