Built-in twine cutter. Can be used with optional Stanley? 11-921A Wall-Mount Blade Dispenser with 100 blades (sold separately). Swing-out blade storage magazine. Three-position retractable blade slide. Includes one blade. Knife Type: Retractable Blade Knife; Blade Type: Retractable; Number of Blades: 1; Handle Material: Metal Casing.