Manufacturer Part Number (MPN) : MK-37DT-30PVThe Eris is named after the second largest Dwarf planet in our solar system. It is a BIG... little knife. With a 1.99-inch long blade it should keep our fellow Americans who live in knife unfriendly cities around this amazing country, from getting into blade-size conversations with police. This little knife wont de-pant our suit wearing customers and when you open a letter or box at your office, your co-workers wont buckle at the knees. You will find the S35VN steel is perfect for all climate pocket carry and very corrosion resistant. The ergonomics of the knife will please as you go about life?s smaller knife tasks.