You can insert 100 screws with one battery charge. The I-Driver is a power screwdriver, designed with a pivot head to get into very tight spaces. The Brute Tough drill and driver is very powerful and versatile. It can be used for a variety of projects. Bosch offers consumers something not many other power tool manufacturers have. Clamp your material in place to line up with the bland and pull the top part of the band saw down. This is great for cutting out wall plugs and door knobs. There are several very small power saws as well. The crosscut saw is used when it is necessary to cut across the grain. A rip saw operates similar to a circular saw but it is smaller. While the Dremel is classified as a power tool, it has some unusual uses over the years. In the 1940 s, the Dremel was used by the Department of Defense to help create the first atomic bombs. During the war, the Dremel was commonly used to reduce the amount of scar tissue from wounds. It has been used to remove tattoos and even by dentists to shape dentures. Most power tools are reasonably priced but you are going to run across some heavy duty, top of the line power tools that have a price tag to reflect it. Keep in mind the cost is more than just the purchase price. Take the cost of essentials into consideration as well. Depending on the type of power tool, these essentials can be sandpaper, belts, blades, bits, or a number of other items. Higher grade numbers mean the paper is finer. To cut your time down, start with a very coarse sandpaper. As you are about to complete the project switch to finer sandpapers to give you a great finish. Make sure you use the right type of sandpaper for the material you are working with. Sandpaper is very inexpensive so it is a good idea to buy a variety of grades and types to have on hand. Since power nailers are often used for roofing and other construction work, you might consider getting a cordless model. They often are just as powerful as the models that operate on compressed air. They come with very effective batteries that are long lasting. Some operate with a compressed gas in a canister.