Irwin Self-Retracting Safety Knife, 1 Retractable Blade, Red/Silver: * Safety knife features a spring-action self-retracting blade, sliding securely into the housing when not in use * Interlocking nose reduces blade wobble and allows for precise cutting * Two different blade positions give user the option of 2 mm extension for box cutting or full extension for general use * Ergonomic grip allows knife to fit easily in hand * Tool-free entry makes for a convenient and easy blade-changing process * Knife Type: Utility * Blade Type: Utility Knife * Blade Material: Steel * Number of Blades: 1