DeWalt DCS391 165mm XR Premium Circular Saw 2x 4.0Ah Li-Ion - 18V - Dewalt DCS391M2-GB, This 18V premium circular saw from DeWalt has been designed with an intelligent trigger allowing total control over all applications. It has a powerful and highly efficient PM58 fan cooled motor with replaceable brushes, delivering up to 3,700 rotations per minute for a fast cutting action. The saw also has a spindle lock for quick and easy blade change. Other features include the cast magnesium base allowing repetitive, accurate cuts, while the ergonomic handle is set with rubber overmold, providing optimum comfort to the user. DeWalt DCS391M2 165mm XR Premium Circular Saw 18 Volt 2 x 4.0Ah Li-Ion