The Stanley Tools Classic99® 6 Inch Retractable Utility Knife delivers flexibility in cutting various materials clean and quick . It has a three-position retractable blade made of carbon alloy steel that can handle all types of professional and home improvement jobs.Interlocking nose to hold blade securely Three-position retractable blade Blade storage in handle Interlocking nose to hold blade securely Three-position retractable blade Blade storage in handle Multi-position blade slide Furnished with three 11-921 Heavy Duty utility blades