Using these Dagger - Con concrete screws is simple. First, make sure the surface (either concrete, masonry, wood, or thin - gauge metal) is clean and dry. Drill a pilot hole if necessary. Then, use a 5/16' hex driver to screw the screw in. Thanks to the diamond point, it should go in easily and quickly. When driving the screw, the hex flange head will give you good stability. Remember, these screws have a great corrosion - resistant coating, but try to keep them away from extremely harsh chemical environments. For maintenance, just wipe them down with a dry cloth after use. If you store them, keep them in a dry place to maintain their coating and integrity.