For sale is a SIP ROTARY TABLE INDEXING PLATE SET PD-3 PD-4 PI-5. My best guess is that this set was not actually used, but I can be wrong. if it was used, it was not abused, for sure. What you see is what you get. The indexing plates were stuck together due to gunked up storage oil. There was a minor rust on the indexing arm, that I cleaned up with a wire brush. Plates are 45mm ID and 173.75mm OD. All dimensions approximate.