The DEWALT DCS571 Brushless 4-1/2 in. Cordless Circular Saw comes with 1 blade, rip fence, dust port adaptor, and blade change key. This handheld circular saw features a bevel gear design allowing users to cut 2X material at 90 degree and 1X material at 45 degree . With convenient on-board blade key storage, users can change blades with minimal hassle. Elongated handle optimizes reach for rip cutting OSB and plywood. The DCS571 is part of the DEWALT ATOMIC range and is 37% lighter than previous battery-powered circular saw models. This makes it easier to use for longer with greater control and less user fatigue. With the DCB205 Lithium Ion battery pack, this cordless saw can cut up to 339 lin. ft. of 3/4 in. OSB.