It is designed to cut nylon monofilament fishing line
CM-100 : length 18cm
FM-200 : length 19.5cm
Surface-hardened and chrome-plated hi-carbon steel
This has a groove("A"), which can be used by wire cutter (less than 5mm) and electric cable stripping.
FM-300 : length 19.5cm
Surface-hardened and chrome-plated hi-carbon steel