Features: Patented replacement blade structure. Wider compatibility. Patented safety lock. Pocket size. Premium materials. Description: Compatible with standard utility blades, the Olight Otacle Pro is excellent for work in warehouses, garages, factories, or just DIY work at home. The blade can be completely locked using a button switch in the closed position, making carrying or storing easier and more secure. Measuring just 3.35 inches long and includes a lanyard hole, the Otacle Pro easily fits in pockets, backpacks, or even keychains. Made from TC4 titanium alloy, this utility knife is lightweight, durable, and corrosion resistant. Olight makes incredible EDC gear, but is best known for for their flashlights.