Indexing plunger are used where positioning operations are required, including below series:

PMT.100, PMT.101, GN 617, GN617-NI, GN 617.1, GN 617.1-NI, GN 817, GN 817-NI, GN 817-C, GN 817-C-NI, GN 817.3, GN 817.3-C, GN 613, GN 613-NI, GN 618, GN 822, GN 822-NI, GN 717, GN 717-NI, GN 717-C, GN 717-C-NI, GN 417, GN 417-C, GN 607, GN 607-NI, GN 607.1, GN 607.1-NI, GN 607.2, GN 607.3, GN 607.4, GN 607.5, GN 816, GN 816.1, GN 608, GN 608.1, GN 612, GN 612-NI, GN 612.2, GN 612.3, GN 712, GN 712-NI, etc.