Over-tightening prevention handcuffs
Fully Automatic, with over-tightening prevention, modernized solutions at Hulkkuffs® Canada.
No more over-tightening injuries in handcuffing.
1, Reliable pressure-activated locking mechanisms, never get over-tightened.
2, 360 degrees wrist protection, from small to large sizes, without dead angles.
3, Widened contacting surfaces with cushions, reduce impact pressures by 75%.
4, Fully automatic double-locks, 80% faster in operation.
The only fully automatic handcuffs.
The latest Hulkkuffs® solutions integrate multiple functions into conventional metallic handcuffs.
1), Over-tightening prevention with pressure-activated locking mechanisms,
2), Automatic locking system, no manual push-to-lock latch, 80% faster in locking,
3), Integrated unlocking mechanism, 60% faster in unlocking time,
4), Anti-shimming, by doubled U-shaped catching notches,
5), Anti-picking , 8 times longer in pick-resistance,
6), Reduce impact pressures in speedy cuffing, or spring shut, with soft cushion springs,
7), False-locking eliminated. Never activated before securely handcuffed.
What is new in 2025 edition.
1, Improved pressure-sensitive locking mechanisms, smoother and more accurate.
2, Protected in all angles of wrist. Dead angles 100% eliminated.
3, More models / materials / colors options are available in 2026:
Chained, Hinged, Tempered aluminum alloy(6061), Aviation aluminum alloy(7075), Colored.
Modernized Handcuffs with injury prevention and automatic locks
A), Handcuffs have been used for over 100 years. It is not unusual to be applied in violent circumstances or for the individuals who struggles, over-tightening injury may occur. In speed cuffing tactics, handcuffs are applied by allowing the ratchet to spring shut (swing-thru cuff), this may lead to direct trauma. Superficial radial neuropathy is the most common injury.
B), Although police officers are properly trained in the use of handcuffs, including how to apply and remove them from individuals, certain situations or individuals sometimes present great challenges to engaging the intricate double locking system, which can result, on occasion, in injury to the individual police officer, the individual, or both.
C), Major injures in handcuffing, or handcuffed.
1), Over-tightening injury for handcuffed individual,
2), Direct trauma injury in spring shut, or speed cuffing,
3), Other injuries in handcuffing: the small lock tip or actuator has to be flipped to lock the handcuffs, this is difficult, dangerous or even not possible when apprehension involves struggles.
The modernized handcuffs developed by Hulkkuffs® Canada reduce and prevent most injuries in most situations.
More than just over-tightening prevention
Faster, Safer and more Reliable in handcuffing.
Simplified processes in cuffing and removing, results less injuries for both police officer and individual.
Certain situations or individuals present greater challenges to engaging the tiny locking system in conventional handcuffs, which may result in injury to the individual police officer, the individual, or both.
The new designs utilize a fully automatic locking mechanism and a pressure-triggered stop-lock.
1), The mechanism is to engage and lock automatically, even when an individual is struggling or being non-compliant with officer direction, without pushing the lock level manually,
2), The pressured-triggered stop-lock secures the moving ratchet immediately when excessive force is applied, and any further tightening is prevented.
3), Once the handcuffs are placed on an individual with a pressure greater than pre-set, the mechanisms lock the handcuffs in both directions; any further push-tightening, self-tightening or/and removing are completely disabled.
4), The automatic lock and un-lock mechanisms reduce cuffing and removing time and is critical when apprehension involves a struggle.
5), The over-tightening mechanism is not active before the handcuff is securely applied on a wrist. False activation never happans.
The research and development of the new handcuffs have been sponsored by RCMP (The Royal Canadian Mounted Police) and ISED (Innovation, Science and Economic Development Canada).
Please read the details about over-tightening prevention designs,
The R&D of this handcuffs is partially funded by the government of Canada,