Using your DeWalt DWA1184 drill bit set is a breeze. First, pick the right drill bit size for your project from the clearly marked shanks. Then, insert the bit into your drill chuck. Make sure to tighten it well, especially for larger bits with the 3 - Flats shank to prevent spin - out. When you start drilling, the 135° split - point will help you start right on target without the bit walking around. You can use these bits on plastic, wood, and metal. Just keep in mind that when drilling in metal or wood, the parabolic flute design will help clear the chips away. As for maintenance, after each use, wipe the bits clean to remove any debris. The black and gold coating helps prevent rust, but if you store them in a damp place, they might still get damaged. So, always store them in the ToughCase®+ system. It's a great way to keep your bits organized and protected. And with the clear lid, you can easily see which bit you need at a glance. Also, be gentle with the bits. The tapered web design makes them durable, but excessive force can still cause breakage. If you're not using a bit for a long time, you can place it back in the case using the patented bit - bar design for easy removal next time.