This is a Milwaukee M12 12V Lithium-Ion cordless drill driver, model 2407-20. [1]
Key Specs: It delivers 275 inch-pounds of torque and operates at 0-400 / 0-1,500 RPM.
Features: The tool features a 3/8-inch chuck, an on-board LED light, and a battery fuel gauge.
Power System: It is powered by the M12 REDLITHIUM battery system, which is designed for extended runtime.