DEWALT 20V MAX Lithium-Ion Cordless Threaded Rod Cutter, 3-Speed 1/4 in. Impact Driver, (1) 20V 2.0Ah Battery, and Charger DCS350D1W887B - The Home Depot
DEWALT 20-volt Max 1/2-in Brushless Cordless Drill (Bare Tool) in the Drills department at Lowes.com
Why do cordless drills emit a spark and flash of light from the motor area when they are turned on and off? - Quora
Is sparking in the motor of my drill a concern? - Quora