The Dark Energy Carabiner Pro packs five tools into a carabiner that attaches to a pack strap, belt loop, or gear bag. The all-metal construction keeps every function solid under real use, and the glass breaker adds a safety layer that most keychain tools skip entirely. What Our Gearhead(R) Experts Are Saying:"I clip this to my pack instead of carrying a separate knife and bottle opener. The all-metal build holds up to actual use rather than just looking the part on a keychain."