VIAIR 400P Series air compressors feature an oil-less design, a high performance PTFE piston gear, and a gearless direct-drive motor. They're moisture and dust-resistant with an anodized aluminum alloy cylinder. These compressors also feature an automatic-reset thermal overload protector, mounting plates with vibration isolators, and stainless steel braided leader hose. The inlet filter is remote mountable, and they also have an inline check valve. The 400P compressors also include a heavy-duty, moisture-resistant carrying bag and a 5-in-one inline deflator/inflator collar.