.2-8-8-M16X1.5-BK Indexing Plunger A notch keeps the plunger in the retracted position. To achieve this, the knob is rotated by 90 degrees after being retracted.
JW Winco GN43-80-5/8X11-75-D1-UK Leveling Feet The wide range of possible combinations of the base and the stud / socket versions make these leveling feet universally applicable.