diff --git a/csharpcore/GildedRose/Abstraction/GlidedRoseItem.cs b/csharpcore/GildedRose/Abstraction/GlidedRoseItem.cs
new file mode 100644
index 00000000..70dc31d3
--- /dev/null
+++ b/csharpcore/GildedRose/Abstraction/GlidedRoseItem.cs
@@ -0,0 +1,6 @@
+public abstract class GuidedRoseItem {
+
+    abstract void UpdateQuality();
+    abstract void UpdateSellIn();
+
+}
\ No newline at end of file
diff --git a/csharpcore/GildedRose/Models/AgedBrie.cs b/csharpcore/GildedRose/Models/AgedBrie.cs
new file mode 100644
index 00000000..522b1c34
--- /dev/null
+++ b/csharpcore/GildedRose/Models/AgedBrie.cs
@@ -0,0 +1,9 @@
+public class AgedBrie : Item, GuidedRoseItem {
+
+    public override void UpdateQuality() {
+
+
+
+    }
+
+}
\ No newline at end of file
diff --git a/csharpcore/GildedRose/Models/BackStagePasses.cs b/csharpcore/GildedRose/Models/BackStagePasses.cs
new file mode 100644
index 00000000..f7a818e2
--- /dev/null
+++ b/csharpcore/GildedRose/Models/BackStagePasses.cs
@@ -0,0 +1,9 @@
+public class BackStagePasses : Item, GuidedRoseItem {
+
+    public override void UpdateQuality() {
+
+
+
+    }
+
+}
\ No newline at end of file
diff --git a/csharpcore/GildedRose/Models/Conjured.cs b/csharpcore/GildedRose/Models/Conjured.cs
new file mode 100644
index 00000000..4a16640c
--- /dev/null
+++ b/csharpcore/GildedRose/Models/Conjured.cs
@@ -0,0 +1,9 @@
+public class Conjured : Item, GuidedRoseItem {
+
+    public override void UpdateQuality() {
+
+
+
+    }
+
+}
\ No newline at end of file
diff --git a/csharpcore/GildedRose/Models/DexterityVest.cs b/csharpcore/GildedRose/Models/DexterityVest.cs
new file mode 100644
index 00000000..cb01cc0d
--- /dev/null
+++ b/csharpcore/GildedRose/Models/DexterityVest.cs
@@ -0,0 +1,9 @@
+public class Dexterity : Item, GuidedRoseItem {
+
+    public override void UpdateQuality() {
+
+
+
+    }
+
+}
\ No newline at end of file
diff --git a/csharpcore/GildedRose/Sulfuras.cs b/csharpcore/GildedRose/Sulfuras.cs
new file mode 100644
index 00000000..c56c767a
--- /dev/null
+++ b/csharpcore/GildedRose/Sulfuras.cs
@@ -0,0 +1,9 @@
+public class Sulfuras : Item, GuidedRoseItem {
+
+    public override void UpdateQuality() {
+
+
+
+    }
+
+}
\ No newline at end of file