Air-powered inline and right-angle drills have a straight body for gripping the tool and applying pressure to the bit during drilling and driving. Their weight is distributed along the tool body, so they're usually easier to hold steady than pistol-grip drills. They have a lever switch that is pressed with multiple fingers (rather than with a single finger like a trigger throttle) to reduce hand fatigue during extended use. These pneumatic drills operate on a compressed air supply to rotate bits in holemaking and fastening applications. They're commonly used in automotive and assembly work. Air-powered tools are typically lighter than corded or cordless tools, helping to reduce operator fatigue when used for long periods of time. They have fewer moving parts, so they tend to run cooler and have a longer lifespan than corded and cordless tools.