The water feed chuck with receiving shaft fits on the double-sided glass drilling machine Profi Drill (BO 79.3-S --> from SN248/13) "top and bottom" and Profi Drill V 2/900-S (BO 79.8-S --> from 2013) "front and back".
If you combine this water feed chuck (SP 79.BG122) with the spindle B16 (SP 79.B1417), you get the complete spindle.
For glass drilling machine double-sided Profi Drill and Profi Drill V 2/900-S