Safety-tipped blade retracts automatically upon release of handle. Unique adjustable dial allows different blade cutting lengths, ensuring the blade isn't too far out. Prevents cutting interior items in package. Handle features retractable edge guides for cutting box tops as well as a blade storage compartment. Includes three replacement blades. Knife Type: Box Cutter; Blade Type: Retractable; Number of Blades: 1; Handle Material: Plastic.