GN 822.7 mini indexing plungers feature small, compact dimensions. Based on the principle of the GN 822 mini indexing plungers, this model combines their ingenious design with a complete series of all current sizes of bolts and threads. These components provide a reasonably priced alternative to the GN 607 / GN 607.1 indexing plungers of the appropriate sizes. To mount, first turn the mini indexing plunger in using the knurled button. Pulling the indexing pin will release the hexagon nut which can then be tightened with an open-end spanner. Plungers are inserted into position by holding them by the knurled knob. The wrench flats on the lock nut are exposed when the pin is retracted, so that the plunger can be easily tightened by means of an open end wrench