This is a Nagai custom fixed blade.   Cowry Y stainless steel.  Black micarta handle - custom made leather "swinger" sheath.  Nickel pins and leather lanyard.

Specifications:
Blade Length: 2.25"
Cutting Edge Length: 2.06"
Overall Length: 5.75"
Blade Steel: Cowry Y
Handle Material: Black G10
HANDMADE IN JAPAN