diff --git a/eco-api/src/main/java/com/willfp/eco/core/items/builder/AbstractItemStackBuilder.java b/eco-api/src/main/java/com/willfp/eco/core/items/builder/AbstractItemStackBuilder.java
index 9f2d09f5..17fa4496 100644
--- a/eco-api/src/main/java/com/willfp/eco/core/items/builder/AbstractItemStackBuilder.java
+++ b/eco-api/src/main/java/com/willfp/eco/core/items/builder/AbstractItemStackBuilder.java
@@ -1,5 +1,6 @@
 package com.willfp.eco.core.items.builder;
 
+import com.willfp.eco.core.items.TestableItem;
 import com.willfp.eco.util.StringUtils;
 import org.apache.commons.lang.Validate;
 import org.bukkit.Material;
@@ -43,6 +44,15 @@ public abstract class AbstractItemStackBuilder<T extends ItemMeta, U extends Abs
         this(new ItemStack(material));
     }
 
+    /**
+     * Create a new ItemStackBuilder to modify an existing item.
+     *
+     * @param item The item to start with.
+     */
+    protected AbstractItemStackBuilder(@NotNull final TestableItem item) {
+        this(item.getItem());
+    }
+
     /**
      * Create a new ItemStackBuilder to modify an existing item.
      *
diff --git a/eco-api/src/main/java/com/willfp/eco/core/items/builder/ItemStackBuilder.java b/eco-api/src/main/java/com/willfp/eco/core/items/builder/ItemStackBuilder.java
index bbcfc460..f829b47a 100644
--- a/eco-api/src/main/java/com/willfp/eco/core/items/builder/ItemStackBuilder.java
+++ b/eco-api/src/main/java/com/willfp/eco/core/items/builder/ItemStackBuilder.java
@@ -1,5 +1,6 @@
 package com.willfp.eco.core.items.builder;
 
+import com.willfp.eco.core.items.TestableItem;
 import org.bukkit.Material;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
@@ -26,4 +27,13 @@ public class ItemStackBuilder extends AbstractItemStackBuilder<ItemMeta, ItemSta
     public ItemStackBuilder(@NotNull final ItemStack base) {
         super(base);
     }
+
+    /**
+     * Create a new ItemStackBuilder to modify an existing item.
+     *
+     * @param item The item to start with.
+     */
+    public ItemStackBuilder(@NotNull final TestableItem item) {
+        super(item);
+    }
 }
diff --git a/eco-api/src/main/java/com/willfp/eco/core/items/builder/LeatherArmorBuilder.java b/eco-api/src/main/java/com/willfp/eco/core/items/builder/LeatherArmorBuilder.java
index ae9cf6a9..82c21603 100644
--- a/eco-api/src/main/java/com/willfp/eco/core/items/builder/LeatherArmorBuilder.java
+++ b/eco-api/src/main/java/com/willfp/eco/core/items/builder/LeatherArmorBuilder.java
@@ -1,5 +1,6 @@
 package com.willfp.eco.core.items.builder;
 
+import com.willfp.eco.core.items.TestableItem;
 import org.bukkit.Color;
 import org.bukkit.Material;
 import org.bukkit.inventory.ItemStack;
@@ -30,6 +31,15 @@ public class LeatherArmorBuilder extends AbstractItemStackBuilder<LeatherArmorMe
         super(base);
     }
 
+    /**
+     * Create a new ItemStackBuilder to modify an existing item.
+     *
+     * @param item The item to start with.
+     */
+    public LeatherArmorBuilder(@NotNull final TestableItem item) {
+        super(item);
+    }
+
     /**
      * Set leather color.
      *