The Milwaukee 3650-21P 18V Impact Driver Set is a powerful and compact tool set designed for professional use. With a maximum torque of 330 in-lbs and a speed of 3600 RPM, this impact driver set delivers high performance in a compact design. Powered by Lithium-Ion batteries with a capacity of 2 Ah, the impact drivers are lightweight and designed for heavy-duty applications. The keyless chuck size of 1 1/4 inches allows for easy bit changes, while the brushless motor ensures efficient power delivery. Perfect for home and workshop use, this impact driver set is a reliable choice from a trusted brand like Milwaukee.