Chisel-1.7.2-1.5.5a is a release file of the Minecraft mod Chisel - Venerable, made for Minecraft 1.7.2. It was published on September 16, 2014 and is 2 MB in size. For the full description, screenshots and every other version, visit the Chisel - Venerable mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.