This is an OLFA MIDI (medium-sized blade) cutter, with some blades used, and replacement blades for OLFA cutters. There are signs of use. These were found while cleaning out my parents' house. I believe they were manufactured and sold during the Showa era. It's uncertain whether they can be used with current cutters, but I'd like to give them to someone who wants them or will use them. There is some cloudiness, but they don't appear to be rusty. Please understand that these are used and have been stored at home for a long time before purchasing. There are no smokers or pets in my home or my parents' home. They will be wrapped in cushioning material and waterproofed before shipping. Recycled materials may be used for packaging. Thank you for your understanding.