The WEN Magnesium Coil Roofing Nailer is designed to use on asphalt shingling, waterproof tar paper, fiber cement roofing and siding, vinyl siding and new or re-roofs applications. Magnesium housing for durability. Quick release for clearing jams. Adjustable exhaust. Adjustable depth control. Tool free adjustment shingle guide. No nail trip lockout mechanism. Contact trip operation. Magazine capacity: 120 nails. 7/8-Inch to 1 3/4-Inch galvanized coil roofing nails. 70 to 120 P.S.I. operating pressure. Couplers not included.