diff --git a/cristallina.py b/cristallina.py
index 0380344..c3b0559 100644
--- a/cristallina.py
+++ b/cristallina.py
@@ -73,6 +73,19 @@ from slic.devices.xoptics import slits
 from smaract_device_def import smaract
 from attocube_device_def import attocube
 
+# KBs
+from slic.devices.xoptics.kb import KBBase,KBHor,KBVer
+kbHor = KBHor(
+    "SAROP31-OKBH154",
+    description="Cristallina horizontal KB mirror"
+)
+
+kbVer = KBVer(
+   "SAROP31-OKBV153",
+   description="Cristallina vertical KB mirror"
+)
+
+
 ###########################################
 instrument = "cristallina"