Rockwell 4 -1/2 in. 5 Amp Compact Circular Saw RK3441K - The Home Depot
DEWALT ATOMIC 20-Volt MAX Cordless Brushless 4-1/2 in. Circular Saw with (1) 20-Volt Battery 3.0Ah & Charger – Monsecta Depot
4-1/2 inch Cordless Circular Saw, 20V Mini Circular Saw Cordless 5500 RPM & 2.0Ah battery & Fast Charger, 3 Blades (24 TCT/80 HCS/60 DIAMOND) for Wood, Soft Metal and Tile - MC8 Pro - Walmart.com