What does the 21V rating mean in practice?

It is the nominal voltage of the battery pack the wrench runs on. Higher voltage generally means more power, but real fastening force also depends on the motor and impact mechanism, which YUNXI does not publish.

Will it remove lug nuts on a truck?

It is marketed for light and heavy-duty fastening, including vehicle maintenance. Tight or rusted nuts on larger trucks may need a breaker bar first, since no torque figure is given.

It uses a 1/2-inch square drive, the common size for impact sockets. Use impact-rated sockets rather than chrome hand sockets, which can crack under impact load.

Does it come with a battery and charger?

The listing describes a cordless 21V tool, so it runs on a rechargeable battery pack. Check the box contents for whether a battery and charger are included before buying.

How does it compare with a corded impact wrench?

It trades the unlimited runtime of a corded tool for freedom from outlets and cords. Corded wrenches usually deliver steadier power; this one suits work away from power.

YUNXI Impact Wrench 1/2 Impact Gun 21V Electric Cordless Impact Wrench Driver

Best price now

$29.77at WalmartChecked Nov 11

Prices are checked against each store and labelled with when.

Visit Walmart

YUNXI Impact Wrench 1/2 Impact Gun 21V Electric Cordless Impact Wrench Driver

Best price now

$29.77at WalmartChecked Nov 11

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $29.77 at Walmart on Nov 11.

Our take on the YUNXI Impact Wrench 1/2 Impact Gun 21V Electric Cordless Impact Wrench Driver

The YUNXI is a 21V cordless impact wrench with a 1/2-inch square drive, built to loosen and tighten lug nuts, suspension bolts and other fasteners without a cord. It is aimed at home mechanics and DIYers who want cordless freedom for car and truck maintenance rather than a shop-grade tool. Against brand-name cordless impact wrenches it trades proven torque figures and a shared battery platform for a low-cost standalone kit. Owners of budget cordless wrenches in this class typically note useful power for light jobs but variable battery life and bulky size.

Best forHome mechanics doing routine car and truck maintenanceDIYers loosening and tightening lug nutsBuyers who want a cordless wrench without a battery platform commitment

Pros

1/2-inch square drive fits common lug nut and bolt sockets
21V cordless design frees you from outlets and cords
Handles light and heavy-duty fastening and loosening tasks
Portable enough to carry around a vehicle or work area

Cons

Torque output is not published, so it is hard to compare with name brands
Battery runtime and charge time are not specified
No shared battery platform with major tool brands
Build and durability are unproven against pro-grade wrenches

YUNXI Impact Wrench 1/2 Impact Gun 21V Electric Cordless Impact Wrench Driver prices at every store

WalmartNew
In stockSold by Xueling TechReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$29.77Free shippingChecked Nov 11
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About the YUNXI Impact Wrench 1/2 Impact Gun 21V Electric Cordless Impact Wrench Driver

This is a 1/2 inch cordless impact wrench with a 21V power system. It is a handheld electric impact gun that runs without a power cord, so it can be used away from fixed outlets.

It is meant to replace bulky wired impact tools. The cordless design lets the user move around vehicles, equipment and work areas. It handles both light and heavy-duty fastening and loosening tasks, including routine car and truck maintenance, home repairs and garage work.

Drive size: 1/2 inch
Voltage: 21V
Power source: Cordless, battery powered
Type: Electric impact wrench driver
Uses: Fastening and loosening, vehicle maintenance, home repairs

Questions and answers

What does the 21V rating mean in practice?: It is the nominal voltage of the battery pack the wrench runs on. Higher voltage generally means more power, but real fastening force also depends on the motor and impact mechanism, which YUNXI does not publish.
Will it remove lug nuts on a truck?: It is marketed for light and heavy-duty fastening, including vehicle maintenance. Tight or rusted nuts on larger trucks may need a breaker bar first, since no torque figure is given.
What sockets fit it?: It uses a 1/2-inch square drive, the common size for impact sockets. Use impact-rated sockets rather than chrome hand sockets, which can crack under impact load.
Does it come with a battery and charger?: The listing describes a cordless 21V tool, so it runs on a rechargeable battery pack. Check the box contents for whether a battery and charger are included before buying.
How does it compare with a corded impact wrench?: It trades the unlimited runtime of a corded tool for freedom from outlets and cords. Corded wrenches usually deliver steadier power; this one suits work away from power.
Where is the YUNXI Impact Wrench 1/2 Impact Gun 21V Electric Cordless Impact Wrench Driver cheapest?: At Walmart, for $29.77, as of our latest check.
What do buyers say about the YUNXI Impact Wrench 1/2 Impact Gun 21V Electric Cordless Impact Wrench Driver?: Rated 4 out of 5 from 1 ratings.