Index: trunk/src/obj_pstk.c
===================================================================
--- trunk/src/obj_pstk.c	(revision 34451)
+++ trunk/src/obj_pstk.c	(revision 34452)
@@ -2,7 +2,7 @@
  *                            COPYRIGHT
  *
  *  pcb-rnd, interactive printed circuit board design
- *  Copyright (C) 2017,2018 Tibor 'Igor2' Palinkas
+ *  Copyright (C) 2017,2018,2021 Tibor 'Igor2' Palinkas
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -1605,3 +1605,14 @@
 
 	return RND_MAX(bb.X2 - bb.X1, bb.Y2 - bb.Y1);
 }
+
+rnd_coord_t pcb_pstk_pen_hole_dia(pcb_board_t *pcb)
+{
+	pcb_pstk_proto_t *proto = pcb_pstk_get_proto_(pcb->Data, conf_core.design.via_proto);
+
+	if (proto == NULL)
+		return 0;
+
+	return proto->hdia;
+}
+
Index: trunk/src/obj_pstk.h
===================================================================
--- trunk/src/obj_pstk.h	(revision 34451)
+++ trunk/src/obj_pstk.h	(revision 34452)
@@ -2,7 +2,7 @@
  *                            COPYRIGHT
  *
  *  pcb-rnd, interactive printed circuit board design
- *  Copyright (C) 2017 Tibor 'Igor2' Palinkas
+ *  Copyright (C) 2017,2021 Tibor 'Igor2' Palinkas
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -275,6 +275,11 @@
 /* estimate "via diameter": really return bounding box larger side; slow! */
 rnd_coord_t pcb_pstk_pen_dia(pcb_board_t *pcb);
 
+/* return the drilling hole diameter of pen's via pstk prototype; warning:
+   this will ignore "slot" */
+rnd_coord_t pcb_pstk_pen_hole_dia(pcb_board_t *pcb);
+
+
 /*** layer info ***/
 typedef struct pcb_proto_layer_s {
 	const char *name;