Stanley 10-399 Swivel-Lock Fixed Blade Utility Knife 6" (152mm) handle length Stanley - Black & Decker Interlocking nose design for safety Comfortable, contoured handle Works with all Stanley replacement utility blades Starts sharper and stays sharper than standard heavy-duty blades Patented interlocking nose for safety Comfortable, contoured handle swivels open for quick, easy blade change Includes 3 blades Stanley's limited lifetime warranty