The Southco 4.7mm spring load plunger is a robust device with M7 threading. The aluminium knob provides a quick-release for sliding parts to operate. The user simply has to pull the aluminium knob to retract the steel stud. To hold the stud in the retracted position, the user must rotate the head 90°. It can be released by simply rotating the head, easily installed using threaded sleeve dimensions.
