DeWalt DC390K is a Heavy-Duty Heavy-Duty XRP™ 18V Cordless Circular Saw Kit. Released in 2004, it has a 6-1/2" carbide tipped blade for cutting common materials at 90° and 45°, 3,700 RPM for fast rip cuts and cross cuts, 0-50° bevel capacity, Fan-cooled motor with replaceable brushes, and XRP extended run-time battery.