Air-powered ratchets connect to a pressurized air supply to tighten and loosen nuts and bolts. Air-powered tools are lighter and run cooler than corded and cordless tools, making them a good choice for manufacturing and other tasks that require extended run times. Fewer moving parts means these tools require less maintenance. These power ratchets turn fasteners in small increments without having to reposition the tool, so it can work faster than nonratcheting wrenches and make it easier to turn fasteners in tight spaces and where high torque is not required. Power ratchets speed tasks and reduce worker fatigue as compared to hand ratchets. Their square drive accepts standard sockets that have the same attachment size as the drive.