The key to solving a renovation project is to equip yourself with the right tools. You can use many materials and you can buy building materials online, e.g. Cordless rotary hammer, the cordless drill is one of the most popular and practical portable power tools, but its close relative, the cordless drill, is more useful for renovation work. Rotary hammers can drill holes and impact screws in wood and metal and have been specially developed to quickly and easily drill holes in concrete, brick, stone and other masonry materials. The second one is Cordless impact wrenches that are similar to standard drills except for one obvious difference.