Using these DAGGER - LOK wood screws is easy. For woodworking projects, just pick up the screw and insert it into the wood. Thanks to the Type 17 point, you don't need to pre - drill, even for hard woods. The deep threads will hold well in both soft and hard woods. When driving the screw, the flat head with nibs will stop it from spinning and will self - countersink. Remember, these screws are made of low - carbon steel, so avoid using them in extremely corrosive environments. To keep them in good shape, store them in a dry place. If they get dirty, you can wipe them with a clean, dry cloth. The lubricated finish helps with penetration, but over time, it may wear off. If that happens, you can apply a light coat of lubricant for better performance.