Using the Klein 44130 utility knife is easy. When you need to change the blade, just press the quick release button to take out the old one. Then slide the lever back and push it forward to get a new blade. The auto - loading feature makes this process fast and safe. For better control and comfort, hold the knife by the rubber - gripped handle. When not in use, keep the knife folded to avoid accidental cuts. Always store it in a dry place to prevent the blade from rusting. If the blade becomes dull, replace it with one from the internal storage. Remember, the knife is heavy - duty, but don't use it for tasks it's not designed for, like prying or cutting extremely hard materials. This will help keep the knife in good condition for a long time.