Overview of the Combined Systems Blue Box security cover for chain handcuffs | Model 7084
What it is
The Combined Systems Model 7084 Blue Box security cover turns standard chain cuffs into a rigid set for safer control during transport, court moves, and medical escorts. It blocks keyhole access to stop picks or shims while keeping your double lock reachable through exterior slots. MPN Model 7084.
How it works
Load your NIJ-approved chain or hinge cuffs into the Blue Box before placing them on the subject, or fit the cover after application. The internal channel captures the chain and creates a rigid connection between bracelets. For additional security, you may add a padlock to the Blue Box.
The Blue Box has a dark polymer body with a smooth, snag-resistant exterior and a centered panel featuring an oval slot for edge double-lock access. The compact form helps limit wrist rotation and leverage during movements.
Why it matters
Agencies need dependable, repeatable restraint without changing cuff models. The improved Model 7084 accepts all sizes of chain handcuffs and many leg cuffs, weighs only 3.4 ounces, and measures 4.1 by 2.7 by 0.51 inches with a 1.72 by 0.51 inch inside channel. Made in the USA, it is a durable, field-proven solution for frontline teams.
Key Features
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Purpose: Converts chain handcuffs into a rigid set for greater control.
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Tamper Control: Prevents access to keyholes with a pick or shim.
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Double-Lock Access: Edge double lock reachable through outside slots.
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Material: Plastic polymer body as supplied.
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Fit Update: Improved to accommodate all sizes of handcuffs and leg cuffs.
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Profile: Shaped for NIJ-approved chain and hinge cuffs.
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Weight: 3.4 oz.
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Dimensions: 4.1 in L x 2.7 in W x 0.51 in H exterior. Inside channel 1.72 in L x 0.51 in W.
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Use Options: Load cuffs before or after application.
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Add-On Security: You may add a padlock to the Blue Box.
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Origin: Made in the USA.
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Care: Wipe clean with mild soap and water. Avoid harsh solvents.
Compatibility
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Works with NIJ-approved chain and hinge handcuffs across all sizes per Model 7084 design.
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Accepts many leg cuffs that share standard chain profiles.
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Not intended for one-piece rigid cuffs that cannot pass through the internal channel.
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Note: Always verify clearance with oversized or non-standard cuff bodies before deployment.
Intended Users
Designed for police officers, court bailiffs, corrections officers, probation officers, state troopers, sheriff’s deputies, detectives, security officers, loss prevention agents, bounty hunters and bail enforcement, and police academy recruits. Teams use the Blue Box for inmate transport, courtroom appearances, hospital escorts, and any movement where limiting wrist rotation and blocking key access increases safety.
What’s Included
Required but not included: handcuffs or leg irons, keys, padlock, transport chains. Handcuffs shown in images are not included.
Frequently Asked Questions about Blue Box security cover
Question 1
Will Model 7084 fit my current cuffs?
Yes. It is profiled to fit NIJ-approved chain and hinge handcuffs and is improved to accommodate all sizes.
Question 2
Can I still use the double lock?
Yes. The edge double lock is accessible through the outside slots without removing the Blue Box.
Question 3
Does it make chain cuffs rigid?
Yes. The Blue Box creates a rigid connection between the bracelets for better control.
Question 4
Can I pre-load the cuffs into the Blue Box?
Yes. You can load cuffs before placing them on the subject or fit the cover after application.
Question 5
Can I add extra security?
Yes. You may add a padlock to the Blue Box when policy allows.
Why Buy from WCUniforms
WCUniforms is owned by a former law enforcement officer and EMT, and USMC and USCG military veterans. We have used the products we sell in the field. Most orders ship the same day, with a goal of within 48 business hours for in-stock items. Hassle-free 30-day returns apply, with some exceptions. You receive SMS and email tracking updates for every order. Get real human instant chat during business hours or call 855-452-4440.
