



Push-in key (for KUB cuffs)
Find your size: How to Measure Guide
Care instructions:
How to Care for Your 3D-Printed Bondage Gear
How to Care for Your Metal Bondage Gear
Material: Stainless Steel
Allergy: None
Weight: 14g
This key can be ordered separately in case it is lost. It is compatible with several of our products:
- KB-126 Heavy rigid hand restraints
- KB-133 Angled stainless steel restraints with optional thumb extensions
- KB-128 Massive Handcuffs Hamburg-8 Click closure
- KB-928 Heavy leg irons with snap lock and connecting chain
- KB-205 Heavy hand and leg irons with connecting chain
Choose options




Our Promise
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How we craft our products
Our 3D-printed cuffs and collars are designed and made to order in our Berlin studio. Every piece is tailored to your measurements for an individual fit, unique comfort, and the freedom to truly make it your own.
For our metal gear, we partner with carefully selected manufacturers worldwide. Each item is chosen for its quality, safety, and aesthetics - thoughtfully integrated into our modular system to meet the same standards as our Berlin-made gear.




Inspiration & Guides

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How to Care for Your Metal Bondage Gear
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