The NR90AE(S1) framing nailer drives plastic collated nails from 2" to 3-1/2" in length and features Metabo-HPT's next generation "Industrial Design". The newly redesigned head guard allows for a faster and easier disassembly process, saving you valuable time during tool maintenance. The NR90AE(S1) weighs only 7.5 pounds, making it easy to use all day, while still providing the power of bulkier, heavier nailers. A selective actuation switch adds the convenience of being able to quickly change between bump or sequential fire and the tool-less depth of drive eliminates the need to adjust the pressure at the compressor. The simple two-step loading makes fastener replenishment quick and easy, reducing downtime.