ObsidianTools-1.7.10-2.2.1.jar is a release file of the Minecraft mod Ender Tools, made for Minecraft 1.7.10. It was published on January 10, 2016 and is 0 MB in size. For the full description, screenshots and every other version, visit the Ender Tools mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.