diff --git a/robots/b1_description/xacro/robot.xacro b/robots/b1_description/xacro/robot.xacro
index 6c1014a..8507acd 100644
--- a/robots/b1_description/xacro/robot.xacro
+++ b/robots/b1_description/xacro/robot.xacro
@@ -86,6 +86,78 @@
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