A framing nailer is an intermittent power tool that can seamlessly work even without a continuous supply of air. This unit needs only a short blast to quickly drive a nail into the wooden objects. The nail is driven the entire length from a single shot, and special high-strength fasteners are produced to work with particularly hard surfaces. Its principle of operation is to transfer briskly energy from a pneumatic cylinder, with air pumped under pressure, a compressed spring or another source (depending on the design) directly to the fasteners. It can accommodate nails up to 3 ½ inches to join 2 x 4s.