Air-powered nail guns (sometimes called nailers) connect to a pressurized air supply to drive nails and pins quickly, accurately, and with less effort than manual hammers and staplers. They hold nail strips or coils that feed nails one after the other to speed installation in framing, roofing, cabinetry, and flooring tasks. A safety mechanism requires the tip of the tool to be compressed before the nail is fired. These guns accept nails with a compatible collation angle, collation type (e.g., glue, paper), head shape, gauge or diameter, length, and style (e.g., finishing, brad). Nailers using straight-collation nails drive nails square while nailers using angled-collation nails drive nails at angles and in corners. Air-powered nailers are typically lighter than cordless tools to help reduce operator fatigue during extended use. They also have fewer moving parts, so they tend to run cooler and have a longer lifespan.