Hitachi NR90AFS1 2-Inch to 3-1/2-Inch Wire Weld Collated Framing Nailer New head guard design allows for quicker disassembly during tool maintenance Lightweight and well-balanced for ease of maneuverability and less user fatigue Selective actuation allows for quick changes between sequential and contact nailing with the flip of a switch Tool-less depth adjustment to countersink or flush drive into a variety of materials Two piece anodized aluminum magazine making repairs or replacements easy and with minimal expense Two step nail loading allows for quick and easy reloads Dry-fire lockout prevents the nailer from firing when nails are not loaded in the magazine, or nail count is too low