diff --git a/README.md b/README.md
index a7577eb..92c0661 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ repositories {
 }
 
 dependencies {
-    implementation("com.github.DebitCardz:mc-chestui-plus:1.4.4")
+    implementation("com.github.DebitCardz:mc-chestui-plus:1.4.5")
 }
 ```
 ### Maven
@@ -34,7 +34,7 @@ dependencies {
 <dependency>
     <groupId>com.github.DebitCardz</groupId>
     <artifactId>mc-chestui-plus</artifactId>
-    <version>1.4.4</version>
+    <version>1.4.5</version>
 </dependency>
 
 ```
diff --git a/build.gradle.kts b/build.gradle.kts
index d71d797..70eb7e1 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -8,7 +8,7 @@ val githubActor = project.findProperty("gpr.user") as String? ?: System.getenv("
 val githubToken = project.findProperty("gpr.key") as String? ?: System.getenv("GITHUB_TOKEN")
 
 group = "me.tech"
-version = "1.4.4"
+version = "1.4.5"
 
 repositories {
     mavenCentral()
diff --git a/src/main/kotlin/me/tech/mcchestui/item/GUIItem.kt b/src/main/kotlin/me/tech/mcchestui/item/GUIItem.kt
index bd6511c..534b0ab 100644
--- a/src/main/kotlin/me/tech/mcchestui/item/GUIItem.kt
+++ b/src/main/kotlin/me/tech/mcchestui/item/GUIItem.kt
@@ -21,6 +21,18 @@ fun GUI.Slot.item(
 	return guiItem(type, builder)
 }
 
+/**
+ * Construct a [ItemStack] to be placed in a [GUI.Slot].
+ * @param stack item stack.
+ * @param builder [GUIItem] builder.
+ */
+fun GUI.Slot.item(
+	stack: ItemStack,
+	builder: GUIItem.() -> Unit = {}
+): GUIItem {
+	return guiItem(stack, builder)
+}
+
 /**
  * Construct a [ItemStack] to be placed in a [GUI.Slot].
  * @param type material type.
@@ -33,14 +45,30 @@ fun guiItem(
 	return GUIItem(type).apply(builder)
 }
 
-open class GUIItem(
-	type: Material
+/**
+ * Construct a [ItemStack] to be placed in a [GUI.Slot].
+ * @param stack item stack.
+ * @param builder [GUIItem] builder.
+ */
+fun guiItem(
+	stack: ItemStack,
+	builder: GUIItem.() -> Unit = {}
+): GUIItem {
+	return GUIItem(stack).apply(builder)
+}
+
+
+open class GUIItem constructor(
+	private val itemStack: ItemStack
 ) {
+	constructor(type: Material)
+			: this(ItemStack(type, 1))
+
 	/**
 	 * [ItemStack] of the [GUIItem].
 	 */
-	var stack = ItemStack(type, 1)
-		private set
+	val stack: ItemStack
+		get() = itemStack.clone()
 
 	/**
 	 * [ItemMeta] of the [GUIItem].
@@ -53,20 +81,12 @@ open class GUIItem(
 	 */
 	var removeParentItalics = true
 
-	/**
-	 * Modify the [ItemStack] of the [GUIItem].
-	 * @param builder [ItemStack] builder.
-	 */
-	fun stack(builder: ItemStack.() -> Unit) {
-		stack.apply(builder)
-	}
-
 	/**
 	 * Modify the [Material] of the [GUIItem].
 	 * @param material [Material] to set to.
 	 */
 	fun material(material: Material) {
-		stack.type = material
+		itemStack.type = material
 	}
 
 	/**
@@ -81,7 +101,7 @@ open class GUIItem(
 				value
 			}
 
-			stack.editMeta {
+			itemStack.editMeta {
 				it.displayName(name)
 			}
 		}
@@ -98,7 +118,7 @@ open class GUIItem(
 				value
 			}
 
-			stack.editMeta {
+			itemStack.editMeta {
 				it.lore(sanitizeLore(lore))
 			}
 		}
@@ -107,9 +127,9 @@ open class GUIItem(
 	 * Current [ItemStack] size.
 	 */
 	var amount: Int
-		get() = stack.amount
+		get() = itemStack.amount
 		set(value) {
-			stack.amount = value
+			itemStack.amount = value
 		}
 
 	/**
@@ -117,7 +137,7 @@ open class GUIItem(
 	 */
 	var glowing: Boolean = false
 		set(value) {
-			stack.editMeta {
+			itemStack.editMeta {
 				if(value) {
 					it.addEnchant(Enchantment.ARROW_INFINITE, 0, true)
 					it.addItemFlags(ItemFlag.HIDE_ENCHANTS)
@@ -136,7 +156,7 @@ open class GUIItem(
 	var customModelData: Int
 		get() = itemMeta.customModelData
 		set(value) {
-			stack.editMeta {
+			itemStack.editMeta {
 				it.setCustomModelData(value)
 			}
 		}