Krauser K2 top case. It's been about 15 years since I sold the bike this K2 was attached to, and it's been stored indoors since then. I recently bought a new bike, but the carrier is too small and this case doesn't fit, so I'm reluctantly putting it up for sale. A thin layer of insulation has been applied to the inside to reduce the internal temperature. The included accessories are the mounting base, a rectangular metal fitting that fits into the base, bolts, and two keys, as shown in the photos. I apologize, but this set of accessories alone cannot be mounted to a carrier (as there is no receiving fitting), so you will likely need a separate, long metal plate and additional bolts. Please make your judgment based on the images for everything else. As it has been stored for a long time, there are scratches, dirt, and signs of aging. Thank you for your understanding.