=Note=
;E = EngagingAnti Rotazionale.;NON E = Non EngagingRotazionale.;TYPE A = the connection is deeper and it is advised to use connessione profonda, da usarsi in cases with good parallelismcaso di buon parallelismo.;TYPE B = the connection is shorter and it is advisable to use connessione corta, da usarsi in cases of bad parallelismcaso di disparallelismo.;ZR = For structures per strutture in ZirconiaZirconio.
[[File:OPT-1100-small.jpg|frame|left|Type A]]
[[File:OPT-1100-large.jpg|frame|left|Type B]]