Create a striking industrial restraint look with this heavy-duty lockable steel bondage collar. Its rigid circular construction, polished silver finish and prominent O-ring give it a distinctive appearance for experienced BDSM roleplay.

The hinged collar opens for positioning around the neck and secures using the supplied locking key. A large front O-ring provides a focal point and can accommodate suitable lightweight roleplay accessories.

With a fixed internal diameter of 142 mm—approximately 5.6 inches—this steel neck restraint must be measured carefully before ordering. Unlike an adjustable faux-leather collar, its rigid construction cannot be tightened or expanded.

Key features

• Heavy-duty steel construction
• Rigid, fixed-size circular collar
• Internal diameter: 142 mm
• Approximate imperial diameter: 5.6 inches
• Hinged design for straightforward fitting
• Secure lockable fastening
• Locking key included
• Large metal O-ring
• Polished silver finish
• Industrial BDSM styling
• Designed for experienced restraint users
• Product code: KR-1004

Check the dimensions before ordering

Measure the widest part of the wearer’s neck and allow sufficient clearance for comfortable breathing, swallowing and normal circulation.

This collar has a fixed 142 mm internal diameter and cannot be adjusted. Do not use it if the fit is excessively tight or if the collar could place pressure on the throat.

How to use

Open the hinged collar and position it carefully around the neck. Close the fastening and secure it using the supplied key.

Keep the key immediately accessible throughout use. Only attach lightweight, compatible roleplay accessories to the O-ring, ensuring they cannot tighten the collar or pull it against the throat.

Safety and care

Never use a locking steel collar alone. The wearer must be monitored continuously, and the key must remain within immediate reach.

Do not pull sharply on the O-ring or attach the collar to a fixed object. Never use it for suspension, lifting, dragging, overhead restraint, breath restriction or supporting body weight.

Remove the collar immediately if the wearer experiences pain, breathing or swallowing difficulty, dizziness, numbness, panic, skin discolouration or unusual discomfort.

Inspect the collar, hinge, lock and O-ring before every use. Wipe it clean afterwards and dry it thoroughly before storage to help preserve the polished metal finish.

For consenting adults aged 18 and over.