The KINK3D Airlock is one of our original creations! People love it for two main reasons: It lets you achieve a 100% metal-free cage setup, and it secures your device with a uniquely numbered seal that proves you've been continuously caged without unlocking — all while keeping the device rigidly connected.
However, the Airlock can be fiddly to put on. It gets a lot easier with practice, but if you're still having trouble, you can follow this short tutorial video (SFW) to learn how to assemble the Airlock backwards. This trick makes it much easier!