For many types of assembling and fixing, power tools are more convenient the hand tools. Power tools use motors to replace manual effort, at significantly greater speed. This increases productivity. For example, to cut large amounts of wood, power saws are better options than hand saws, requiring less effort and accomplishing the task more quickly. Power tools are also designed for accuracy allowing greater precision than hand tools in more complex or repetitive situations. Power tools are typically more convenient and can be used in places where hand tools won’t work. Power tools are also expensive compared to hand tools.