Front-right angle view of Tekton ratcheting box end wrench. Item #WRB35411
Side view of Tekton ratcheting box end wrench. Item #WRB35411
Person holding Tekton ratcheting box end wrench. Item #WRB35411
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Item #WRB35411

11 mm Long Fixed/Flex Head 12-Point Ratcheting Box End Wrench

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InchMetric

Sizes

6 mm
$24
7 mm
$24
8 mm
$24
9 mm
$24
10 mm
$25
11 mm
$25
12 mm
$26
13 mm
$26
14 mm
$26
15 mm
$27
16 mm
$28
17 mm
$28
18 mm
$32
19 mm
$32
20 mm
$40
21 mm
$40
22 mm
$40
23 mm
$40
24 mm
$44
$25.00
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DetailsSpecifications

Details

A raised fixed head and ratcheting flex head callout on a Tekton wrench

One Wrench Size, Two Head Styles

The double box ends are the same size and both are 12-point, but one side features a raised fixed head while the other has a ratcheting flex head.
Front and back view of a flush side and raised side on a Tekton fixed flex wrench

Versatile Fixed Head

The fixed box end has a flush side to maximize surface contact with a fastener as well as a raised side for finger clearance and to fit into recessed areas.

Ratcheting Flex Head

The ratcheting end reduces the need to re-engage the fastener repeatedly. The flex joint sweeps smoothly through 180 degrees without any set positions, allowing the wrench to access fasteners around obstacles.
Tekton 8 mm, 12 mm, and 17 mm ratcheting wrench options

Tekton Ratcheting Wrench Size Proportions

These are samples of small, medium, and large proportions. Exact dimensions can be found on the product pages.
Graphic showing 6-point, 12-point, and square fasteners in the box end of a ratcheting wrench

12-Point Box Ends

Fits multiple types of fasteners, including 6-point, 12-point, and square. 1/4, 9/32, 5/16, and 11/32 inch and 6, 7, 8, and 9 mm wrenches have a 60-tooth ratcheting mechanism. All other sizes have a 72-tooth ratcheting mechanism.
Chart showing the minimum proof torque of the box end of Tekton metric ratcheting wrenches with additional lines to show the ASME standards for combination wrench and ratcheting wrench box ends

Ratcheting Wrench Box End Minimum Proof Torque

* Size unavailable in long flex box end ratcheting wrenches.
Data from: ASME B107.100-2020 Category 6 Combination Wrench and ASME B107.100-2020 Category 66 Ratcheting Box Wrench Type II.
A size callout on a 19 mm Tekton fixed flex wrench

Clear Markings

Tekton fixed/flex head ratcheting wrenches are permanently marked in two ways: a high-visibility laser marking and a stamped marking.
Close-up image of the word 'DRIVE' with the directional arrow. Both are marked with a high-visibility laser marking.
A closeup of a 12-point chrome fixed wrench end

Smooth, Satin Chrome Finish

These fixed/flex ratcheting wrench bodies are made from 6140 chromium-vanadium steel and heat-treat them to 42–49 HRC. The wrenches are abrasive-blasted to create a finely textured finish and then plated with a trivalent chrome process.
The components of the ratcheting end of a ratcheting wrench, with each part labeled

Parts and Assembly

Specifications

11 mm Long Fixed/Flex Head 12-Point Ratcheting Box End Wrench

Specs for 11 mm Long Fixed/Flex Head 12-Point Ratcheting Box End Wrench
Country of Origin
Taiwan
Item Weight
0.25 lb.