Cordless

Cordless CIW01-US Impact

Impact
3.31 pounds
21 volts

4.4/ 5 on Amazon102Amazon ratings3.4ProductDome score

Medium confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology

Best forYou want a cordless impact tool in the 21 volt class for general fastening

A 21 volt cordless impact tool at a workable weight, worth checking against your torque needs before buying.

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ProductDome scorecard

How it ranks among the 284 impacts we track

3.4/ 5ProductDome scoreMedium confidence

Owner satisfaction · 56% of scorecategory median 4.6★4.4

4.4★ across 102 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 360 ratings2.5

102 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score0.0

Modest tracked demand last month.

Data quality · 11% of score2.5

Brand identity, imagery, description and spec coverage.

The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 284 impacts we track - how the scorecard works · full impacts data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

The CIW01-US is a cordless impact tool running on 21 volts and weighing about 1.5 kilograms, sized for one handed use on fastening tasks. It fits anyone needing a battery powered impact driver or wrench for automotive or general fastening work.

A 21 volt platform sits in the mid range for cordless impact tools, generally enough torque for common fastening jobs without the bulk of higher voltage units. The listing does not specify battery inclusion, torque output, or drive size, so anyone with a specific job in mind should confirm those details separately.

Model CIW01-US
21 volt cordless operation
Item weight 1.5 kilograms
4.4 average rating from 102 reviews

Who it's for

Suits DIYers or tradespeople who want a cordless impact tool for routine fastening at a manageable 1.5 kilogram weight. Not a fit for anyone needing a stated torque rating for heavy automotive or industrial bolts.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out

Cordless 21 volt design
Manageable 1.5 kilogram weight

What to check first

Torque rating not specified
Battery and charger inclusion not confirmed

Performance notes

Cordless impact tools deliver rotational force in rapid bursts, helping drive or remove fasteners without twisting the user's wrist the way a plain drill would. At 1.5 kilograms it should stay manageable for one handed use over a work session, though torque output and drive size are not listed.

Specifications

Brand	Cordless
Model	CIW01-US
Item Weight	3.31 pounds
Voltage	21 volts

How it compares

This product against the closest alternatives we track in impacts.

Product	Amazon rating	Ratings	ProductDome score
Cordless CIW01-US ImpactThis product	4.4 / 5	102	3.4 / 5
DEWALT DCF845B ImpactDeWALT	4.7 / 5	12,700	4.5 / 5
Milwaukee 2457-20 ImpactMILWAUKEE	4.6 / 5	8,078	4.5 / 5
GEARWRENCH 81270 ImpactGEARWRENCH	4.7 / 5	4,983	4.4 / 5
AOBEN AB7331T ImpactAOBEN	4.4 / 5	10,707	4.4 / 5

Frequently asked

Questions about the Cordless CIW01-US

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

What voltage does the CIW01-US run on?

21 volts.

How much does the CIW01-US weigh?

About 1.5 kilograms.