Ultimate Lock BackA(R) Utility Knife The Sheffield Utility Series 12113 Ultimate Lock BackA(R) Utility Knife features a one-hand opening operation for convenience as you cut through obstacles such as paper, cardboard, and more! This Sheffield Utility Knife also boasts a quick-change mechanism for a quick and easy blade replacement procedure, using standard utility knife blades. It features a lightweight aluminum handle for ease of use and includes a belt clip for easier carrying. You&';re all set to cut through twine, boxes and more with "ultimate" ease. As always, Sheffield&';s industry-leading Lifetime Warranty has your back. Description: Patented Quick Change Blade Mechanism Lock BackA(R) Release Lightweight Aluminum Texture Grip Handle 4 Ounces, 6 Inches Overall 3-1/2 Inches, Folded Features Pocket Clip Accepts All Standard Utility Blades 1 Blade Included Sheffield&';s Lifetime Warranty Specifications: Weight: 1.00 lb Warranty: Sheffield Limited Lifetime Package Type: Counter Display Overall Length (in): 6 in Blade Length (in): 2-1/2 in Handle Length (in): 3-1/2 in Blade Material: Stainless Steel Handle Material: Aluminum Handle Type: Textured Knife/Blade/Scraper Type: Utility Color / Finish: Blue Lockable Blade: Yes Recommended Blades: All Standard Utility Blades