diff --git a/Step.Model/DTOModels/ToolModels/DTOShankModel.cs b/Step.Model/DTOModels/ToolModels/DTOShankModel.cs
index a41ff911..3bf9cce5 100644
--- a/Step.Model/DTOModels/ToolModels/DTOShankModel.cs
+++ b/Step.Model/DTOModels/ToolModels/DTOShankModel.cs
@@ -27,7 +27,7 @@ namespace Step.Model.DTOModels.ToolModels
         public int RightSize { get; set; }
         [Required]
         public int MagazinePositionType { get; set; }
-        [Required]
+
         public List<DTOShankChildModel> ChildsTools { get; set; }
 
         public static explicit operator ShankModel(DTOShankModel obj)