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Single Lokrite Backup Box-End Wrench

SMP-LR34
3/4”
$192
SMP-LR78
7/8”
$192
SMP-LR1116
1-1/16”
$192
SMP-LR114
1-1/4”
$192
SMP-LR1716
1-7/16”
$207
SMP-LR158
1-5/8”
$218
SMP-LR11316
1-13/16”
$242
SMP-LR2
2”
$249
SMP-LR2316
2-3/16”
$254
SMP-LR238
2-3/8”
$259
SMP-LR2916
2-9/16”
$264
SMP-LR234
2-3/4”
$287
SMP-LR21516
2-15/16”
$289
SMP-LR318
3-1/8”
$306
SMP-LR312
3-1/2”
$333
SMP-LR378
3-7/8”
$342
SMP-LR414
4-1/4”
$1,320
SMP-LR458
4-5/8”
$1,353
SMP-LR5
5”
$1,398
SMP-LR538
5-3/8”
$1,763
SMP-LR534
5-3/4”
$1,898
SMP-LR618
6-1/8”
$3,350
The Lokrite Hands-Free magnetic Backup Wrench is a revolutionary tool when it comes to bolting or torqueing work. The Lokrite hands-free magnetic backup wrench eliminates the need to have a second person holding a backup wrench during breakouts or bolting and torqueing work. Lokrites are magnetic, pinch-point free, and have a tension release bolt for easy removal. The SMP Lokrite spec sheet shows the torque ratings for each size and style of Lokrite backup wrench. Lokrites are safer than the convential backup wrench for a number of reasons. First and foremost, they are completely hands-free.

The Lokrite Hands-Free magnetic Backup Wrench is a revolutionary tool when it comes to bolting or torqueing work. The Lokrite hands-free magnetic backup wrench eliminates the need to have a second person holding a backup wrench during breakouts or bolting and torqueing work. Lokrites are magnetic, pinch-point free, and have a tension release bolt for easy removal. The SMP Lokrite spec sheet shows the torque ratings for each size and style of Lokrite backup wrench. Lokrites are safer than the convential backup wrench for a number of reasons. First and foremost, they are completely hands-free.

Single Lokrite Backup Box-End Wrench

Price range: $192.00 through $3,350.00

& Free Shipping

The Lokrite Hands-Free magnetic Backup Wrench is a revolutionary tool when it comes to bolting or torqueing work. The Lokrite hands-free magnetic backup wrench eliminates the need to have a second person holding a backup wrench during breakouts or bolting and torqueing work. Lokrites are magnetic, pinch-point free, and have a tension release bolt for easy removal. The SMP Lokrite spec sheet shows the torque ratings for each size and style of Lokrite backup wrench. Lokrites are safer than the convential backup wrench for a number of reasons. First and foremost, they are completely hands-free.

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SMP-LR34
3/4”
$192
SMP-LR78
7/8”
$192
SMP-LR1116
1-1/16”
$192
SMP-LR114
1-1/4”
$192
SMP-LR1716
1-7/16”
$207
SMP-LR158
1-5/8”
$218
SMP-LR11316
1-13/16”
$242
SMP-LR2
2”
$249
SMP-LR2316
2-3/16”
$254
SMP-LR238
2-3/8”
$259
SMP-LR2916
2-9/16”
$264
SMP-LR234
2-3/4”
$287
SMP-LR21516
2-15/16”
$289
SMP-LR318
3-1/8”
$306
SMP-LR312
3-1/2”
$333
SMP-LR378
3-7/8”
$342
SMP-LR414
4-1/4”
$1,320
SMP-LR458
4-5/8”
$1,353
SMP-LR5
5”
$1,398
SMP-LR538
5-3/8”
$1,763
SMP-LR534
5-3/4”
$1,898
SMP-LR618
6-1/8”
$3,350
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The Lokrite Hands-Free Magnetic Backup Wrench is a revolutionary tool for bolting, torqueing, and breakout work. This innovative wrench eliminates the need for a second person to hold a backup wrench during operations, making the job safer and more efficient.

Each Lokrite wrench is magneticpinch-point free, and equipped with a tension release bolt for easy removal after use. The SMP Lokrite specification sheet provides torque ratings for every size and style of wrench to ensure proper performance and safety.

Lokrite backup wrenches are lighter and easier to carry than conventional wrenches, and they can be equipped with tie-offs and tethers for added fall protection. The open-end Lokrite design is especially useful in tight spaces where a full box-end wrench cannot fit. These open-end tools also feature a locking safety cleat to keep the wrench securely in place during use.

Every Lokrite wrench incorporates patented embedded magnet technology, ensuring a strong, reliable hold without manual support. Standard sizes are available from 1-1/4” to 6-1/8”, with metric options also offered. Custom sizes and styles can be manufactured upon request.

When performing bolting, torqueing, or breakout work, the Lokrite Hands-Free Magnetic Backup Wrench from SMP delivers superior safety, convenience, and efficiency—saving time and reducing the risk of injury on the job.

Product Video

Part #

SMP-LR34, SMP-LR78, SMP-LR1116, SMP-LR114, SMP-LR1716, SMP-LR158, SMP-LR11316, SMP-LR2, SMP-LR2316, SMP-LR238, SMP-LR2916, SMP-LR234, SMP-LR21516, SMP-LR318, SMP-LR312, SMP-LR378, SMP-LR414, SMP-LR458, SMP-LR5, SMP-LR538, SMP-LR534, SMP-LR618

Nut Size

3/4”, 7/8”, 1-1/16”, 1-1/4”, 1-7/16”, 1-5/8”, 1-13/16”, 2”, 2-3/16”, 2-3/8”, 2-9/16”, 2-3/4”, 2-15/16”, 3-1/8”, 3-1/2”, 3-7/8”, 4-1/4”, 4-5/8”, 5”, 5-3/8”, 5-3/4”, 6-1/8”

Load Limits

350 ft lb, 450 ft lb, 950 ft lb, 2320 ft lb, 2486 ft lb, 3480 ft lb, 3500 ft lb, 4030 ft lb, 4200 ft lb, 4250 ft lb, 4530 ft lb, 5525 ft lb, 6240 ft lb, 7016 ft lb, 7150 ft lb, 8780 ft lb, 23706 ft lb, 26891 ft lb, 26900 ft lb, 26900 ft lb, 26900 ft lb, 45500 ft lb

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Single Lokrite Backup Box-End Wrench
Price range: $192.00 through $3,350.00Select options