diff --git a/src/EcsAspect.cs b/src/EcsAspect.cs
index cb3d621..7291cb4 100644
--- a/src/EcsAspect.cs
+++ b/src/EcsAspect.cs
@@ -216,6 +216,26 @@ namespace DCFApixels.DragonECS
     #endregion
 
     #region Mask
+    public readonly struct EcsMaskBit
+    {
+        public readonly int chankIndex;
+        public readonly int mask;
+        public EcsMaskBit(int chankIndex, int mask)
+        {
+            this.chankIndex = chankIndex;
+            this.mask = mask;
+        }
+        public static EcsMaskBit FromPoolID(int id)
+        {
+            return new EcsMaskBit(id / 32, 1 << (id % 32));
+        }
+
+        public override string ToString()
+        {
+            return $"bit({chankIndex}, {mask})";
+        }
+    }
+
     [DebuggerTypeProxy(typeof(DebuggerProxy))]
     public sealed class EcsMask
     {
diff --git a/src/Utils/EcsMaskBit.cs b/src/Utils/EcsMaskBit.cs
deleted file mode 100644
index 7d3dfda..0000000
--- a/src/Utils/EcsMaskBit.cs
+++ /dev/null
@@ -1,22 +0,0 @@
-namespace DCFApixels.DragonECS
-{
-    public readonly struct EcsMaskBit
-    {
-        public readonly int chankIndex;
-        public readonly int mask;
-        public EcsMaskBit(int chankIndex, int mask)
-        {
-            this.chankIndex = chankIndex;
-            this.mask = mask;
-        }
-        public static EcsMaskBit FromPoolID(int id)
-        {
-            return new EcsMaskBit(id / 32, 1 << (id % 32));
-        }
-
-        public override string ToString()
-        {
-            return $"bit({chankIndex}, {mask})";
-        }
-    }
-}