The DEWALT DCS397 FlexVolt XR Alligator Saw is fitted with a durable, high power brushless motor for the toughest applications. Its two saw blades (NO blades with bare unit version) run in opposite directions, so the material will not move while cutting. Aluminium gearcase housing for lower weight and excellent durability, that is also dust sealed along with the bearings for increased durability. Ideal for cutting Class 12 clay block (Poroton). Specification Strokes at No Load 2,400/min. Stoke Length 40mm Blade Length 430mm Blade Stop 0.2 Seconds Weight Without Battery 5.6kg The DEWALT DCS397N FlexVolt XR Alligator Saw is supplied as a Bare Unit NO battery or charger supplied.