To complete hardware repairs, it is important to have a toolkit containing necessary tools such as electro-static discharge tools, hand tools, cleaning tools, and diagnostic tools. Experience helps determine which tools are needed for different jobs. Static electricity is easily generated through friction and discharged through grounded antistatic mats and wrist straps. Hand tools are either manually operated or electrically powered devices used for work. Cleaning tools are essential for maintaining computers without damaging components. Popular diagnostic tools help identify computer problems.