ServerTickMonitor-1.11.2-2.0.0.jar is a release file of the Minecraft data pack Copper Tools DataPack, made for Minecraft 1.11.2. It was published on July 1, 2017 and is 0 MB in size. For the full description, screenshots and every other version, visit the Copper Tools DataPack data pack page.
How to install: Put the .zip into the datapacks folder of your world (.minecraft/saves/<world>/datapacks) and run /reload. No mods needed.