Using your Deejo punk - style pocket knife is easy. To open it, just use your thumb to push the blade out until the liner lock clicks into place. When you're done, press the liner lock gently and close the blade. Here are some important things to note. Don't use this knife for tasks it's not designed for, like prying or cutting extremely hard materials, as it may damage the blade. Keep it out of reach of children. For maintenance, clean the blade with a dry cloth after each use. If it gets wet, dry it thoroughly to prevent rust. You can also apply a little knife oil to the blade and moving parts occasionally to keep it working smoothly. Enjoy your knife and stay safe!