Product Overview

The CRAFTSMAN V20 3/8 in. Cordless Impact Wrench (CMCF911B) is built for tight-space fastening, light mechanical tasks, and general-purpose torque needs. With a brushless motor for long life and runtime, this compact tool delivers up to 165 ft-lbs of max torque, making it ideal for automotive repair, appliance work, and household assembly.

Its variable-speed trigger allows for precision control during fastening and removal, while the 3/8 in. anvil with hog ring provides quick and secure socket changes. Weighing just over 2 lbs (tool only), it’s easy to handle overhead or in cramped areas where bulkier tools don’t fit.

Part of the CRAFTSMAN V20 platform, the CMCF911B is compatible with all V20 batteries and chargers—so it’s easy to add into an existing setup or build around if you're just getting started.

Note: This is a bare tool—battery and charger sold separately.

Technical Specs

• Brand: CRAFTSMAN
• Model Number: CMCF911B
• Platform: V20
• Drive Size: 3/8 in. anvil with hog ring
• Max Torque: 165 ft-lbs
• Speed: Variable (up to 2,800 RPM)
• Impacts per Minute (IPM): Up to 3,500
• Motor: Brushless
• Tool Weight: ~2.1 lbs (without battery)
• Battery/Charger: Not included (bare tool)

What It’s Good For

A solid choice for DIY mechanics, HVAC techs, and general repair work. Great for jobs like removing small bolts, tightening clamps, or assembling equipment where a 1/2 in. wrench is overkill.

Compared to Other Impact Wrenches

The CMCF911B sits between a drill and a full-size impact wrench in terms of torque and size. Its brushless motor and 3/8 in. anvil give it the edge for lighter jobs where control, not brute force, is key.

Also Known As

• CRAFTSMAN 3/8 in. V20 Cordless Impact Wrench
• CMCF911B Impact Wrench Tool Only
• CRAFTSMAN Brushless Compact Wrench
• CRAFTSMAN 20V Automotive Fastening Tool