The Swiss Tech Quick-change Knife offers SK5 steel for extra sharpener for high durability and sharpness. The knife features a quick blade change mechanism without the use of a screwdriver. The ergonomic zinc alloy handle allows for comfortable grip. The quick-change knife comes with a total of 5 blades located in a swing-out blade storage magazine.This model features a quick-change mechanism, 4-position blade retraction, storage for five blades, and a slot for cutting twine and stripping wire, even when the blade is retracted into the housing. This important design feature helps to reduce the chance of injury to the user and others nearby. The lanyard loop at the rear of the knife makes it a convenient to use-and-carry Swiss Tech tool.