Overview
These are nickel plated carbon steel handcuffs built on a 3-link chain rather than the rigid hinge seen on hinged-style cuffs, which gives the wearer more wrist movement and makes the set easier to apply to a resisting subject. The chain-link format is the standard choice across South African security companies, private investigators and correctional staff who need a restraint that packs flat, moves with the body and still locks down hard once the ratchet engages.
The bright nickel finish resists corrosion and wear far better than a plain blued or painted surface, and it is the finish most commonly stocked by local PPE and security wholesalers under names such as Handcuff Chain Link Nickel Plated Double Locking. Two cheek plates per cuff, a 3-tooth tumbler lock and a 19-position ratchet keep the design consistent with the double-locking cuffs used by professional restraint teams, while the set ships with two keys and a zip-close pouch so it is ready to carry on a duty belt straight out of the box.
What sets a 3-link set apart from both single-hinge and 5-link versions is the balance it strikes: enough chain to let the subject's wrists rotate independently, reducing injury risk and complaint potential, without the extra slack of a longer 5-link chain that some agencies restrict for close-quarter control.
Key Features
- Carbon steel body with a nickel plated finish resists rust and keeps a bright, professional appearance after repeated use and cleaning.
- 3-link chain construction lets the wrists move independently of each other, reducing strain on a restrained subject compared with a rigid single-hinge cuff.
- Double-locking mechanism with a 3-tooth tumbler stops the ratchet over-tightening once engaged, a safety feature most security standard operating procedures require.
- 19-position ratchet on a 3 mm thick bar allows a close, secure fit across a wide range of wrist sizes.
- Reinforced cheek plates at roughly 2 mm per side and 12 machine-riveted points keep the frame rigid under load.
- Comes with two single-locking keys on a split ring, so a spare is always on hand if one key goes missing.
- Zip-up moulded carry pouch with a belt loop keeps the set, chain and keys together and protected when not deployed.
Technical Specifications
| Chain Link Count |
3 links |
| Material |
Carbon steel, case-hardened internals (typical) |
| Finish |
Nickel plated |
| Locking System |
Double lock, 3-tooth tumbler (typical) |
| Ratchet Positions |
19 locking positions (typical) |
| Ratchet Thickness |
3 mm (typical) |
| Cheek Plate Thickness |
2 mm per side (typical) |
| Rivet Points |
12 machine-riveted points (typical) |
| Inside Cuff Diameter |
50 mm static diameter (typical) |
| Weight per Cuff |
approximately 320 g (typical) |
| Keys Included |
2 single-locking keys |
| Carry Pouch |
Zip-close moulded pouch with belt loop |
Materials and Construction
The cuffs are machined from carbon steel and plated with nickel, a finish chosen over bluing or black oxide because it shrugs off sweat, handling and repeated contact with a duty belt without flaking. Internally the components are case-hardened so the ratchet teeth do not wear smooth after months of daily cycling. Twelve rivet points hold the two cheek plates of each cuff together, and the pins connecting the 3-link chain are set to resist prising or drilling attempts, consistent with anti-tamper handcuff designs sold to the security trade.
Fit and Compatibility
The 19-position ratchet and roughly 50 mm static inside diameter fit the large majority of adult wrists, from slender to heavy-set, and the double lock prevents the ratchet creeping tighter once set, an important detail during transport or prolonged restraint. The keys supplied are standard single-locking handcuff keys; they are not guaranteed to be universal across every handcuff brand, so agencies standardising on a single key type should confirm compatibility before bulk purchase.
In the Box
One set of nickel plated 3-link chain handcuffs, two galvanised single-locking keys on a split ring, and a black zip-close carry pouch with a belt loop for duty-belt mounting.
Care and Maintenance
Wipe the chain and ratchet down after exposure to sweat, rain or dust, and apply a light drop of gun oil or lock lubricant into the keyway and ratchet mechanism every few months to keep the double lock cycling smoothly. Store the set in the supplied pouch rather than loose in a bag, since the pouch keeps grit out of the ratchet teeth and stops the keys from scratching the plating.
Who It's For
Private security officers, armed response personnel, correctional and transport escort staff, and civilians who keep a restraint set for home or vehicle security will find this set does the job a hinged cuff does, with the added wrist articulation a chain link gives a subject during extended restraint.
FAQ
Does the double lock stop the cuffs tightening further once applied? Yes, engaging the double lock with the key tip stops the ratchet advancing, which prevents accidental over-tightening during transport.
Will any handcuff key open these? The two keys supplied will, but cross-brand compatibility with other manufacturers' handcuffs is not guaranteed.
Can the chain length be changed? This set is supplied as a fixed 3-link chain; longer 5-link or custom lengths are a different product and not interchangeable with this set.
Is the pouch included or sold separately? The pouch, with its belt loop and zip closure, ships as part of this set.
