The Prism extension can be quickly and securely screwed in all prisms and enables positioning of the prism at different heights in combination with spacers (Item No. S2-280821). With the screw support (Item No. S2-280822) an infinitely variable positioning is possible.
S2-160649 is a collar which inserts into the system holes.
S2-160649-0 has a flush mount protrusion to securely mount into system holes.