The_McKnack_Pack_1.8.zip is a release file of the Minecraft resource pack McKnack Pack [1.11.2][x16] - Bringing color back to Minecraft, made for Minecraft 1.7.4. It was published on May 4, 2014 and is 2.9 MB in size. For the full description, screenshots and every other version, visit the McKnack Pack [1.11.2][x16] - Bringing color back to Minecraft resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.