The HD dual carabiner is your easiest way for tying up your sub. Simply connect your restraints via the HD dual carabiner and you're set.

Of course, the HD dual carabiner is made from stainless steel, accordingly there's no need to worry about rust and robustness. Whether you combine it with your cuffed restraints or with the FLEXBELTS, you will be happy to have them in your bondage toolbox.