PK-1 P-BS is an alternative to screw fastening dental models with a thread M6 to a mounting plate of the phantom head. It cornes with an attachaient pôle with snap-in stopper, so frasaco models with démonstration articulators DA, DAF, DAV, DAK or UAV can easily be mounted using their large fixing screw. Ail models with démonstration articulators that fit a 13 mm rod diameter can be mounted