Release 4.0.8 is a release file of the Minecraft mod Additional-Buildcraft-Objects, made for Minecraft 1.7.10. It was published on March 1, 2016 and is 0.4 MB in size. For the full description, screenshots and every other version, visit the Additional-Buildcraft-Objects mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.