OLFA's K-10 Four-Position Concealed Safety Blade (10 Pack) provides a convenient way to maintain compatible safety cutting tools while reducing interruptions during repetitive material-handling tasks. Each blade can be repositioned through four cutting positions, allowing users to move to a fresh edge when the active edge becomes dull. This approach makes better use of the blade while retaining the controlled profile of a concealed safety blade. The replacement design is appropriate for packaging stations, distribution centers, warehouses, retail operations, construction sites, and other environments where cartons and packaging materials are routinely opened or trimmed. With four usable positions per blade and 10 blades included, the package supplies multiple replacement cycles for compatible OLFA safety knives without requiring complete tool replacement.