Firstly, with its high-powered motor this tool not only drills but also hammers out even when it's used on tough materials. This saves time and effort for users by providing one machine that can do both functions at once!Second, the variable speed setting can assure precise drilling all the way down into work pieces. This has another hidden advantage as well. The person wielding this hammer drill will not inadvertently damage his question in progress by over-striking and tilting its tip.Thirdly, the tool's reverse function makes things more convenient for the user. For example, it can easily remove screws or free bits that have become stuck because of being pressed into place rather than dropped in politely. In contrast, the 110v hammer drill's humanized design and light weight keep its users' hands from getting tired. That means they can keep at their work longer with less effort.Finally, equipped with these two functions in one product means the user doesn't need to switch between sets of tools–thereby saving time and increasing productivity.