geckolib-fabric-1.16.5-3.0.41.jar is a release file of the Minecraft mod [Legacy] GeckoLib Fabric, made for Minecraft 1.16.5. It was published on June 29, 2021 and is 3.4 MB in size. For the full description, screenshots and every other version, visit the [Legacy] GeckoLib Fabric mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.