RIDGID 18V Brushless Cordless 7-1/4 in. Circular Saw (Tool Only) R8657B - The Home Depot
NEW!! Hercules Circular Saw Beam Cutter Attachment - Use Your Circular Saw to Cut Beams up to 12 in. Thick in One Pass, Mounts Securely to Most 7-1/4 in. Circular Saws - Amazon.com
Makita 15 Amp 16-5/16 in. Corded Circular Saw with 32T Carbide Blade and Rip Fence 5402NA - The Home Depot
HYCHIKA Adjustable Angle Circular Saw with Laser Guide - 4-1/2-in Blade, 6 Saw Blades Included, ETL Safety Listed in the Circular Saws department at Lowes.com