The 3/8" driver W5133 and 1/2" drive W5153 impact wrenches enhance the features you demanded: increased durability with stronger internal parts and increased access with its tapered front end. This next generation compact impact wrench packs 365 ft.-lbs. of MAX torque in a cordless compact unit that weighs only 5.3 lbs. (with a BL2022 battery). Tested by real technicians, ready to tackle real work.
 
Power:
The brushless motor and impact mechanism are finely tuned to unleash a high power-to-weight ratio, with 550 ft.-lbs. of nut busting torque and 365 ft.-lbs. of MAX torque at 5.3 lbs (with BL2022 battery). The all-metal drive train and hammer mechanism are designed to provide technicians the power they need without adding extra weight to the tool.
Control:
With 4 power modes, you can adjust a dial instead of changing tools to deliver the right amount of torque when you need it and eliminate rework. From brake calipers to valve covers and everything in between, there�s no need to switch tools. The variable-speed switch with electronic brake provides MAX control of the tool.
Durable:
Protected by a chemical-resistant composite housing and a patented steel-reinforced frame, the W5133 & W5153 is built to withstand repeated drops onto concrete and exposure to shop fluids. The IQV spark-free brushless technology and reinforced bushing provide a longer-life motor you can rely on.
Access:
Thanks to its compact ergonomic design and lightweight build, the W5133 & W5153 can easily access tight spaces, giving you access no matter where your work may be hiding. A built-in 360 degree COB LED light casts a wide beam to give you excellent visibility with no shadows.
 
Other Features:
Sealed, enhanced, lubricated and reinforced bushing
Tapered hammercase / Front End
IQV Power Control System includes 4 modes: MAX Power, Half Power, Wrench Tight, and Hand Tight
Shadowless LED light ring with task light mode and 4 dimmable settings
6.5" tip-to-tail design at only 5.3 lbs (with BL2022 battery)
Impact and chemical-resistant housing and patented steel reinforced frame Variable-speed switch with electronic brake
Pin anvil versions, W5133P & W5153P, ensures positive socket retention
Variable-speed switch with electronic brake provides maximum control of the tool and increases safety-release trigger, drive stops spinning
 
Also available in combo kits:
W5133-K12: 3/8" Compact Cordless Impact Wrench, 1 BL2022 5.0Ah Battery, BC1121 Charger & Bag 
W5133-K22: 3/8" Compact Cordless Impact Wrench, 1 BL2022 5.0Ah Battery, 1 BL2012 2.5Ah Battery, BC1121 Charger & Bag 
W5153-K12: 1/2" Compact Cordless Impact Wrench, 1 BL2022 5.0Ah Battery, BC1121 Charger & Bag 
W5153-K22: 1/2" Compact Cordless Impact Wrench, 1 BL2022 5.0Ah Battery, 1 BL2012 2.5Ah Battery, BC1121 Charger & Bag
 W5133P-K22: 3/8" Pin-Style Compact Cordless Impact Wrench, 2x BL2022 5.0Ah Battery, BC1121 Charger & Bag