The Hitachi NR90AE(S1) air-powered, round head framing nailer, drives plastic collated strip nails from 2" to 3-1/2" in length. A new head guard design featuring exterior head bolts now allows for easier disassembly, reducing downtime for maintenance. Comes with five-year manufacturer's warranty. Box includes safety glasses. At 7.5lbs, this powerful Hitachi framing nailer is one of the lightest in its class. The NR90AE(S1) features a selective action trigger to easily switch between contact and sequential operation, two piece aluminum magazine to minimize repair expenses, sawtooth safety for maximum grip, and tool free adjustable depth of drive. The Hitachi NR90AE(S1) round head framing nailer is great for framing, sheathing, truss building, sub-flooring, decking, fencing and pallet assembly. This item replaces the previous generation NR90AE and NR90AEPR.