Using your DeWalt DWADEND14516 nut driver is easy. First, pick the right end (1/4 - inch or 5/16 - inch) for your fastener. Insert it into your impact driver or wrench. When you start working, the industrial - strength magnet will hold the fastener in place. Just make sure the driver is fully inserted into the tool to avoid any slipping. As for cleaning, you can easily detach the sockets. Remove any dirt or debris and put them back on. When it comes to maintenance, keep the nut driver in a dry place. Avoid dropping it as it might damage the advanced hardening. If you notice any signs of wear, it might be time to replace it. That way, your nut driver will keep working great for a long time.