Stanley 0-10-409 DynaGrip Snap-Off Blade Knife - 9mm The Stanley 0-10-409 Knife has 13 snap-off segments. The blade is 9mm wide and each segment is 9.5mm long. The blade can be retracted into the body of the knife for safety and to protect the sharp edge. Features: Blade carrier and blade guide in stainless steel for smooth operation Ergonomic and strong handle for long life Large wheel blade lock for heavy-duty cutting Notched barrel to help lock blade Specification: Model number: 0-10-409 Length: 135mm Blade length: 9.5mm Blade width: 9mm