Model DCS391B. 20V MAX Lithium-Ion 6-1/2 in. Cordless Circular Saw (Tool Only) - DCS391B. Dewalt 20V MAX Brushed Lithium-Ion 6-1/2 in. Cordless Circular Saw (Tool Only). 0 - 50 Degree Bevel capacity allows for aggressive bevel cuts for a multitude of applications.