SPECIFICATIONS Material: Aluminum alloy Blade material: High carbon steel Opening length: 180mm Folding length: 105mm Spare blades type: Trapezoidal blade & Horn blade Net weight: 190g WHAT YOU WILL GET 1* Utility Folding Knife 10pcs Extra Blades(5*Trapezoidal blade + 5*Horn blade) WHY YOU CHOOSE IT 【3 Position Retractable Blade】 This work knife comes with 3-position manual retraction which allows you adjust the blade position and lock it while using for various needs of cutting and safety. Just extend or pull back the buckle, you can easily open or close the blade, which is safe and effecient. 【Blade Storage Design】 Extra blades are included in the handle of this knife cutter. Just pull the back cover to open the blade compartment to get the replacement baldes, which allows you to continue your work shortly. 【Quick-change Mechanism】 The easy blade release mechanism allows you to safely and quichly change the blades and helps prevent injury. Just press the button and you can take out the blade. Our utility knife is compatible with most standard sized utility blades for extra convenience. 【Various Applications】 The high carbon steel utility knife blades are durable and sharp. It easily cuts through paper, carpet, plastic, cartons, cloth, bags, leather, PVC, drywall, linoleum, soft metal and much more. The knife also has an integrated gut hook for cutting ropes and small things.