M18, 1/2" High-Torque Impact Wrench With Friction Ring, 18V, Features 4-Pole Motor & Powerful Impact Mechanism To Deliver A Reliable 450 FT/LB Of Torque With Maximum Runtime, 0-1900 RPM & 0-2200 LPM With The Variable Speed Trigger, 1/2" Anvil With Friction Ring Allows Quick & Easy One-Handed Socket Changes, Lightweight, Portable, Kit Includes: (2) M18 Lithium Ion 3.0Ah Battery Packs, M18 Lithium-Ion Battery Charger & Carrying Case.