The Porter-Cable 3-1/2 in. Round Head Framing Nailer offers durability and convenience with a compact design and its own carrying case. It features an internal piston catch for consistent power with a tool-free depth-of-drive adjustment that facilitates accurate nail setting. This nailer has a non-marring nose tip and adjustable exhaust to help maintain a clean work surface and direct particulates away from you. The trigger can be set to restrictive or contact actuation mode and a nail lockout mechanism eliminates dry fire to help prolong blade life.