The KNR90AE combines consistent and reliable performance of our EC89, 4-Gal. twin stack compressor, with the power and precision of our NR90AE 3-1/2 in. round head framing nailer. With a 13-Amp direct drive induction motor, cast iron oil lubricated pump, and industrial twin stack design, this compressor is ready for even your largest project. The NR90AE has a selective actuation switch, tool-less depth of drive, and two step nail loading make it both convenient and efficient. Capable of driving 3-1/2 in. x 0.148 nails, this tool is perfect for framing, sub-flooring, truss build up, and general home construction. The kit even comes equipped with a 25 ft. diameter PVC hose with 1/4 in. NPT plug and coupler, so you can simply load your nails and begin your project right out of the box.