Their operational principle is very similar to that of the ball lock pins: Replacing the balls in the familiar versions, self-threaded segments matching the corresponding thread sizes are arranged at the bottom end of the pins. Releasing them merely requires that the user press the orange aluminium press button at the top end of the pin. The pin can then be easily inserted into the existing threaded hole. When the press button is released, the threaded segments engage in the thread of the part. A semi-turn at the end will lock the threaded lock pin firmly and securely in place inside the bore hole. A push of the press button is all it takes to release the segments again. 

Affixed to the handle is a nut that is designed to secure a retaining cable / a clip for a retaining cable.