In the early 1980's cave divers were in need of small, line-cutting devices. Since the application was strictly for cutting lines, they looked to other sports and adopted the parachute line cutter known as a Z-Knife. The Z-knife was a protected blade stored away in a pouch. Today, the pouches have evolved, but the knife is still the same one parachutists use to cut away a chute. Sharper than a dive knife, the Z-Knife is preferred for cutting through monofilament and braid line. Compact and easy to stow, the Z-Knife is available in a 2-inch webbing mount. A nylon clip offers an alternative attachment point or the Z-Knife is easily stored in any pocket. A quick-release Velcro tab holds the knife firmly in place.