A hammer drill is really useful if you are going to drill in hard materials. By adding a hammering action, the hammer drill is much more efficient than a normal drill. Note that the hammering action is not suitable for soft materials. You can quickly damage the material, ending up with a huge hole rather than a small round hole. Due to this, hammer drills have a switch, allowing you to disable the hammering action.

In most cases, cordless drills are better than the mains powered models. But if you are going to use the hammering action a lot, you may prefer to buy a mains powered hammer drill. The hammering action quickly drains the battery. Obviously, the power cord will be a problem but you will be able to finish your task without having to having to worry about flat batteries. You have a number of excellent hammer drills to choose from. Here you have more information about hammer drills, helping you to find the best hammer drill for you.