Hitachi NV45AES Coil Roofing Nailer with Bottom-Load Magazine 2-piece tar resistant push lever disperses excess tar during normal nailer use Full round head driver blade provides smooth and perfectly flat nail placement Nail magnet stops nail waste by holding the final nail in place during fastening Tool-less depth of drive adjustment Comes with a 5-year limited warranty Bottom Load Operation Last Nail Magent New Full Round Driver Balde Tool-less depth of drive adjustment Pneumatic Power Feed and Return