Size: Open: Approximately 9.5cm Folded: Approximately 5.5cm This is a super retro safety knife made in the 1960s. It's probably a product you can't find anywhere now! Those who know it will probably think it's a nostalgic knife! m(._.)m In the old days, it was a tool for sharpening pencils, but it's probably too dangerous for kids today and they wouldn't be able to sharpen anything with it, right? Please feel the history as a collection for adults of a bygone era♪ How about it? Thank you very much. Please note that the frame color may vary in the set of 5. Since it is an old metal product, there may be some scratches and rust. Thank you for your understanding. #SafetyKnife #Retro #Antique #Collection 21