DatapacksJava
Max stack size 99
This data pack will increase item stacks from 64 to 99. Free Minecraft Java datapack for 1.21, 1.21.8, 1.21.5.
⬇ Download on CurseForge
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.8, 1.21.5
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
Verified by MCModsHub
- Downloads as max stack size 99.zip
- Download size: 5 KB
- Download link checked 9 Sept 2026 — working
These come from our own check of the pack file, not from the source page.