Lowes offers DeWalt DCF903B 3/8" Cordless Impact Wrench for $129 (reg $169) with free shipping.

Product Description:
Ideal for use in a wide variety of automotive applications, the XTREME™ 12V MAX* Brushless 3/8-in Cordless Impact Wrench delivers 250 ft-lbs of max tightening torque and 400 ft-lbs of max breakaway torque to tackle stuck and stubborn fasteners. Access tight areas with its compact design while the LED ring illuminates your workspace. With a glass-filled nylon housing that resists harsh chemicals and solvents, this tool will deliver quality performance day in and day out. Includes the tool only.

• Multi-use tool: 250 ft-lbs max tightening torque and 400 ft-lbs max breakaway torque for use in a wide variety of automotive applications
• Access tight areas: Compact size for work in hard-to-reach spaces
• Damage-resistant: Glass-filled nylon housing resists effects of harsh automotive chemicals and solvents
• Increased visibility: LED ring makes it easier to see in low light situations