Patented Replacement Blade Structure: Replace the blade in a second tool-free! Wider Compatibility: Compatible with standard utility blades, which makes finding blades easy. Great for a warehouse, garage, factory, or just doing some DIY work at home. Patented Safety Lock: The blade can be completely locked using a button switch in the closed position, making carrying or storing easier and more secure. Pocket Size: Measuring 3.35x;1.36 in and weighing only 1.55 oz, it can fit easily in pockets. Included is a lanyard as well as a leather case, making it easy and safe to carry in your backpack or key chain. Premium Materials: The main body (without clips, blades, or screws) is made of TC4 titanium alloy, making it lightweight and corrosion-resistant, and ready for long-time use