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CRAFTSMAN V20 Brushless RP 1/2-in Impact Wrench CMCF921B1 / 7
Product guide

CRAFTSMAN V20 Brushless RP 1/2-in Impact Wrench CMCF921B

The CRAFTSMAN V20 Brushless RP CMCF921B is a cordless 1/2-inch impact wrench offered as a tool-only item. Its claimed maximum fastening torque is 275 ft-lb, with two modes, a variable-speed trigger and a hog ring anvil, but you will need a compatible battery and charger separately.

At a glance

  • Manufacturer claims up to 275 ft-lb of maximum fastening torque.
  • Two operating modes and a variable-speed trigger provide control options for different tasks.
  • Hog ring anvil is described as allowing easy socket changes.
  • LED work light is intended to improve visibility at the work area.
  • Manufacturer claims up to 26% more runtime than its specified brushed comparison, under the stated test conditions.
Price
$118.00Save 38%

Reference price: $189.00

Price checked: Nov 13, 2026

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Pros and cons

Pros

  • Tool-only configuration suits buyers who already have the compatible battery and charger.
  • Two modes and variable-speed triggering offer more control than a single fixed setting.
  • Hog ring anvil supports convenient socket changes, and the built-in LED helps illuminate work areas.

Cons

  • Battery and charger are sold separately, adding a separate purchase for buyers without compatible equipment.

Technical specifications

18 specifications
Identity
BrandCRAFTSMAN
ModelCMCF921B
Power and operation
Platform voltage20 volts
Operation modeBattery
Maximum fastening torque275 ft-lb
MotorBrushless
Speed modes2 mode settings
Dimensions and installation
Drive size1/2 in.
Length listed8.7 inches
Weight listed1.8 kg
Materials and finish
Material listedMetal
FinishPowder Coated
ColourNoir,rouge
Features and compatibility
AnvilHog Ring Anvil
TriggerVariable speed trigger
Work lightLED work light
VERSATRACK compatibilityUse the clips (sold separately) to hang this tool directly on the VERSATRACK Wall Organization System (sold separately)
Warranty
Warranty3 Year Limited Warranty

What to know before buying

  • The runtime claim is a comparison with the CRAFTSMAN CMCF900 using a 4.0 Ah battery on 3/8 x 3 in lag screws driven into 4 x 4 pressure-treated wood. The 20V MAX label refers to maximum initial battery voltage without a workload. The manufacturer states nominal voltage is 18 volts. The listed item weight and dimensions are not accompanied by measurement conditions.

What’s in the box

  • CMCF921 impact wrenchIncluded
  • Power adapterNot included

Who is it for?

A good fit for

  • CRAFTSMAN V20 owners who already have a compatible battery and charger.
  • Home, vehicle and workshop users seeking a 1/2-inch impact wrench for light to medium fastening work.
  • Buyers who want two modes, variable-speed trigger control and an LED work light.

Less suited to

  • Buyers looking for a complete kit with battery and charger included.
  • Users whose work requires a documented torque rating above the claimed 275 ft-lb maximum fastening torque.
CRAFTSMAN V20 Brushless RP 1/2-in Impact Wrench CMCF921B · photo 2
Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 617 ratings
  • 5 stars86%86%
  • 4 stars7%7%
  • 3 stars4%4%
  • 2 stars1%1%
  • 1 star2%2%

Customer feedback describes the wrench as effective and powerful enough for light to medium work, with positive reports about torque, quality and durability. That broadly fits the listed maximum fastening torque of 275 ft-lb, though the figure remains a manufacturer claim and does not establish performance for every fastener or task. The aggregate rating distribution is predominantly five-star, but ratings alone cannot explain individual experiences.

Positive themes

  • Customers describe it as effective for its intended work and report sufficient torque for various tasks.
  • Feedback highlights perceived build quality and durability.
  • Customers report that it suits light to medium work.

Frequently asked questions

Does the CMCF921B include a battery and charger?

No. The listing identifies this as tool only and says the battery and charger are sold separately.

What torque does this impact wrench claim?

The manufacturer lists up to 275 ft-lb of maximum fastening torque. This is a manufacturer claim, not an independently verified measurement.

What control features does it have?

The listing describes two mode settings and a variable-speed trigger. It also specifies a hog ring anvil and an LED work light.

Is it compatible with VERSATRACK?

The manufacturer says it can hang directly on the VERSATRACK system using clips sold separately. The clips and wall system are not part of the stated tool-only package.

CRAFTSMAN V20 Brushless RP 1/2-in Impact Wrench CMCF921B · photo 3
Additional product photo 3

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