W9491-K4E-SGHK, 1" Sq Dr Cordless Impact Wrench, 3525 N-m Nut Busting Torque

Features: World's most powerful 20V 1" cordless impact wrench with best-in-class power-to-weight ratio; brushless motor and finely tuned impact mechanism for exceptional torque delivery and efficiency; robust all-metal drivetrain and hammer for maximum durability in heavy-duty use; IQV® Intelligent Power Control System with 4 modes (including Max Power, Half Power, and two auto shut-off modes at lower torques like 180 & 400 ft-lb) for precise control and productivity; variable-speed trigger; 360° shadowless COB LED light ring for superior visibility in low-light/confined areas; impact- and chemical-resistant composite housing with patented steel-reinforced frame to withstand drops and harsh environments; ergonomic D-handle design for reduced fatigue and better control in high-torque applications; forward/reverse switch; anvil with socket retainer ring and thru-hole for secure, quick socket changes; lightweight yet rugged build ideal for heavy equipment, truck fleet, construction, structural bolting, and industrial fastening/removal

Model: W9491-K4E-SGHK

Type: Cordless High-Torque Impact Wrench Kit (IQV20 Series)

Drive Size: 1" square drive (friction ring / socket retainer ring with thru-hole anvil)

Voltage: 20V DC (Lithium-Ion; uses dual batteries in series for max power)

Nut-Busting Torque (Breakaway / Max Reverse): 2600 ft-lb (3525 Nm)

Maximum Forward / Fastening Torque: 2200 ft-lb (2983 Nm approx.; up to 3000 ft-lb / 4067 Nm in some mode references)

No-Load Speed: 890 RPM