The Carpoint 3-part snap-off blade knife is suitable for multi-functional use. The set comprises 2 completely plastic snap-off blade knives with an 18 mm blade and a snap-off blade knife with a 9 mm blade. All knives have a slider to push the blade from the plastic holder. The manual lock ensures that the knife does not retract when it is being used. After use, the knife can be pushed back in place. If the knife becomes blunt, the blade should be snapped off using the removable black rear side of the knife. This enables you to continue to use the snap-off blade.