Listing is for one 3M Dynamic Mixing Applicator Gun. Item was purchased for use in an auto collision repair teaching program but was never used, we are selling as used due to corrosion/discoloration of metal components from it's time in storage. Packaging was removed by us to reduce cost of shipping. Instructions have rust on staples. See photos for more details or anything we may have missed in our description. Any devices showing measurement, testing, or demonstration of item; along with backdrops, stands, or any other items used to assist in photography are not included unless specifically stated above. Thank you for your interest and please reach out with any questions or concerns.