NITECORE NTK05 Titanium Keychain Knife

The NITECORE NTK05 is a minimal titanium (TC4) keychain knife built around a replaceable No. 11 surgical blade rather than a fixed edge — when the blade dulls, you swap it instead of sharpening it. It opens manually via a nail nick, locks with a frame lock, and measures 97 mm open. At 4.8 g and 55 mm folded, it ranks among the smallest knives you can clip to a keyring without noticing the weight at all. With no sheath and no pocket clip, it's purely an EDC tool for small, precise cuts — opening packages, trimming cord, peeling fruit — not a camp knife for wood processing or bulk food prep. The titanium body resists corrosion better than standard steel, and the swappable blade keeps it sharp without carrying a sharpener. It functions as a backup to a main knife rather than a replacement for one, and it earns its keep more on light day trips and travel than on expedition-scale use.