The main function of the MAJ-901 is to supply water for flushing and cleaning the endoscope instrument channel, helping to maintain a clear view during diagnostic and therapeutic procedures. This product is part of the endoscope accessories and ancillary components, and it plays an important role in the proper performance of the endoscopy system, especially in medical centers and hospitals. Return Policy: Items are sold as-is with no returns or refunds available unless explicitly stated.