AS IS UNTESTED LOT OF 2 Tylan FC-2902MEP 5/-T Mass Flow Controller 2900 Series. They are in decent cosmetic condition with some signs of previous use such as scuffing, marks, scratches, discoloration from stickers, and overall cosmetic wear. The cosmetic conditions vary slightly among the lot of two. PLEASE NOTE the flow rates and specific models differ on each of the controllers, as shown in the photos 4-6. There are also two controllers missing half of the red plastic covers, as shown in photo 2. Please refer to the pictures for more detail, and feel free to message with any questions or concerns regarding this item. The Tylan controllers pictured are the ONLY ITEMS INCLUDED IN THIS DEAL. NOTHING ELSE IS INCLUDED.