item-duper-1.0.0.jar is a release file of the Minecraft mod Dupe Key for Fabric, made for Minecraft 1.21, 1.21.8, 1.21.5, 1.21.4, 1.21.1, 1.21.6, 1.21.3, 1.21.7, 1.21.2, 1.21.9, 1.21.10, 1.21.11. It was published on March 22, 2026 and is 0 MB in size. For the full description, screenshots and every other version, visit the Dupe Key mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
