RYOBI ONE+ HP 18V Brushless Cordless 7-1/4 in. Circular Saw (Tool Only) PBLCS300B - - Amazon.com
RYOBI ONE+ 18V Cordless 6-1/2 in. Circular Saw (Tool Only) P507 - The Home Depot
Ryobi P507 One+ 18V Lithium Ion Cordless 6 1/2 Inch 4,700 RPM Circular Saw w/ Blade (Battery Not Included, Power Tool Only) - - Amazon.com
Ryobi P506 One+ Lithium Ion 18V 5 1/2 Inch 4,700 RPM Cordless Circular Saw with Laser Guide and Carbide-Tipped Blade (Battery Not Included, Power Tool Only) green full size - Walmart.com