CRAFTSMAN CMCF921B V20 1/2 in Impact Wrench
- Item Torque: 275 ft-lb
- Head Style: Box End
- Operation Mode: Battery
- Measurement Standard: SAE (Inch)
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A 20-volt Craftsman impact tool with the strongest combination of rating and recent demand in this batch, from a brand with an established cordless platform.
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ASIN: B0B94PQR3PModel: CMCF921BCategory: Impact Drivers & Wrenches
Overview
Twenty volts and 3.97 pounds define what's known about the CRAFTSMAN CMCF921B, filed under Tools > Impacts. That weight matches a bare tool sold without a battery, in line with how Craftsman typically lists items in its 20V lineup.
Craftsman is an established name in cordless power tools, and the 20V platform this model belongs to is widely used, meaning batteries and chargers from other Craftsman 20V tools are likely to work with it. The listing does not specify drive size or impacts per minute, so match those against your intended use before buying if precision torque matters.
- Model CMCF921B from Craftsman
- 20-volt, item weight 3.97 pounds
- Listed under Tools > Impacts
Who it's for
Fits buyers already invested in Craftsman's 20V battery platform who want a bare impact tool to add to it, as well as anyone doing automotive, construction or general fastening work. Buyers starting from zero should check whether a battery and charger are included, since the weight suggests this may be a bare tool.
Pros and cons
- From an established cordless platform (Craftsman 20V)
- Weight suggests a bare tool, so confirm whether a battery and charger are included
- Drive size and impacts-per-minute not listed
Performance notes
Impact tools deliver rotational force in rapid bursts rather than continuous torque, which is what lets them drive and remove fasteners without the operator fighting the tool's twist. At 3.97 pounds and 20 volts, it sits in line with typical compact impact wrenches or drivers on this platform, though the listing does not break out drive size or impacts per minute.
Specifications
| Brand | Craftsman |
|---|---|
| Model | CMCF921B |
| Dimensions & fit | |
| Item Weight | 3.97 poundshigher than 60% of 184 impact drivers & wrenches |
| Item Length | 8.7 incheslower than 54% of 128 impact drivers & wrenches |
| Capacity & performance | |
| Jaw Capacity | 0.5 inches |
| Power & efficiency | |
| Voltage | 20 voltshigher than 54% of 171 impact drivers & wrenches |
| Construction & materials | |
| Material Type | Alloy Steel |
| Color | Black, Red |
| Finish Types | Powder Coated |
| Included components | |
| Included Components | (1) CMCF921 Impact Wrench, Battery & Charger Sold Separately |
| Package Quantity | 1 |
| Other details | |
| Item Torque | 275 ft-lblower than 55% of 116 impact drivers & wrenches |
| Head Style | Box End |
| Operation Mode | Battery |
| Measurement Standard | SAE (Inch) |
| End Style | Socket End |
| Is Racheting | Yes |
| Is Non Sparking | No |
| Item Type Name | CRAFTSMAN 20V Brushless Cordless Impact Driver, 1/2 IN., Tool Only (CMCF921B) |
Closest rivals on specs
Frequently asked questions
Is the CRAFTSMAN CMCF921B a full kit with a battery?
The listed weight of 3.97 pounds is consistent with a bare tool, so confirm whether a battery and charger are included before ordering.
What voltage does it run on?
20 volts, matching Craftsman's 20V cordless platform.