diff --git a/iCub/robots/iCubDarmstadt01/model.urdf b/iCub/robots/iCubDarmstadt01/model.urdf
index d7a31d4..59a373d 100644
--- a/iCub/robots/iCubDarmstadt01/model.urdf
+++ b/iCub/robots/iCubDarmstadt01/model.urdf
@@ -983,6 +983,13 @@
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diff --git a/iCub/robots/iCubErzelli02/model.urdf b/iCub/robots/iCubErzelli02/model.urdf
index d282267..667753b 100644
--- a/iCub/robots/iCubErzelli02/model.urdf
+++ b/iCub/robots/iCubErzelli02/model.urdf
@@ -983,6 +983,13 @@
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diff --git a/iCub/robots/iCubGazeboV2_5/model.urdf b/iCub/robots/iCubGazeboV2_5/model.urdf
index 6ba4416..4420e85 100644
--- a/iCub/robots/iCubGazeboV2_5/model.urdf
+++ b/iCub/robots/iCubGazeboV2_5/model.urdf
@@ -983,6 +983,13 @@
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diff --git a/iCub/robots/iCubGazeboV2_5_KIT_007/model.urdf b/iCub/robots/iCubGazeboV2_5_KIT_007/model.urdf
index 96448f1..84da6da 100644
--- a/iCub/robots/iCubGazeboV2_5_KIT_007/model.urdf
+++ b/iCub/robots/iCubGazeboV2_5_KIT_007/model.urdf
@@ -28,6 +28,13 @@
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@@ -767,6 +788,13 @@
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diff --git a/iCub/robots/iCubGazeboV2_6/model.urdf b/iCub/robots/iCubGazeboV2_6/model.urdf
index c97f3f8..72c1106 100644
--- a/iCub/robots/iCubGazeboV2_6/model.urdf
+++ b/iCub/robots/iCubGazeboV2_6/model.urdf
@@ -983,6 +983,13 @@
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diff --git a/iCub/robots/iCubGazeboV2_7/model.urdf b/iCub/robots/iCubGazeboV2_7/model.urdf
index ce65f88..759dad3 100644
--- a/iCub/robots/iCubGazeboV2_7/model.urdf
+++ b/iCub/robots/iCubGazeboV2_7/model.urdf
@@ -983,6 +983,13 @@
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diff --git a/iCub/robots/iCubGazeboV3/model.urdf b/iCub/robots/iCubGazeboV3/model.urdf
index 2c91507..3cf29bd 100644
--- a/iCub/robots/iCubGazeboV3/model.urdf
+++ b/iCub/robots/iCubGazeboV3/model.urdf
@@ -403,6 +403,13 @@
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@@ -535,6 +542,13 @@
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diff --git a/iCub/robots/iCubGenova01/model.urdf b/iCub/robots/iCubGenova01/model.urdf
index d7a31d4..59a373d 100644
--- a/iCub/robots/iCubGenova01/model.urdf
+++ b/iCub/robots/iCubGenova01/model.urdf
@@ -983,6 +983,13 @@
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diff --git a/iCub/robots/iCubGenova02/model.urdf b/iCub/robots/iCubGenova02/model.urdf
index 717a02c..d65d5c5 100644
--- a/iCub/robots/iCubGenova02/model.urdf
+++ b/iCub/robots/iCubGenova02/model.urdf
@@ -28,6 +28,13 @@
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diff --git a/iCub/robots/iCubGenova03/model.urdf b/iCub/robots/iCubGenova03/model.urdf
index 06d49b3..0d0df42 100644
--- a/iCub/robots/iCubGenova03/model.urdf
+++ b/iCub/robots/iCubGenova03/model.urdf
@@ -1287,28 +1287,48 @@
1
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child
child_to_parent
-
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child
child_to_parent
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child
child_to_parent
-
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child
diff --git a/iCub/robots/iCubGenova04/model.urdf b/iCub/robots/iCubGenova04/model.urdf
index d282267..667753b 100644
--- a/iCub/robots/iCubGenova04/model.urdf
+++ b/iCub/robots/iCubGenova04/model.urdf
@@ -983,6 +983,13 @@
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diff --git a/iCub/robots/iCubGenova09/model.urdf b/iCub/robots/iCubGenova09/model.urdf
index 4cff3ff..6fe2516 100644
--- a/iCub/robots/iCubGenova09/model.urdf
+++ b/iCub/robots/iCubGenova09/model.urdf
@@ -403,6 +403,13 @@
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diff --git a/iCub/robots/iCubGenova11/model.urdf b/iCub/robots/iCubGenova11/model.urdf
index d39597b..c29eb7e 100644
--- a/iCub/robots/iCubGenova11/model.urdf
+++ b/iCub/robots/iCubGenova11/model.urdf
@@ -983,6 +983,13 @@
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diff --git a/iCub/robots/iCubLisboa01/model.urdf b/iCub/robots/iCubLisboa01/model.urdf
index e5eee95..7ce6378 100644
--- a/iCub/robots/iCubLisboa01/model.urdf
+++ b/iCub/robots/iCubLisboa01/model.urdf
@@ -1241,28 +1241,48 @@
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child
child_to_parent
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child
child_to_parent
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child
child_to_parent
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child
diff --git a/iCub/robots/iCubNancy01/model.urdf b/iCub/robots/iCubNancy01/model.urdf
index ae83f02..0ea84e2 100644
--- a/iCub/robots/iCubNancy01/model.urdf
+++ b/iCub/robots/iCubNancy01/model.urdf
@@ -1287,28 +1287,48 @@
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child
child_to_parent
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child
child_to_parent
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child
child_to_parent
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child
diff --git a/iCub/robots/iCubWaterloo01/model.urdf b/iCub/robots/iCubWaterloo01/model.urdf
index d39597b..c29eb7e 100644
--- a/iCub/robots/iCubWaterloo01/model.urdf
+++ b/iCub/robots/iCubWaterloo01/model.urdf
@@ -983,6 +983,13 @@
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