Repair is a skill in mcmmo, which require an iron block (aka mcmmo anvil) to repair the item. It use material of the tools (Iron pickaaxe -> Iron Ingot) to fix the tools. It will also remove/decrease the level of enchantment on the tools if ur repair level is not high.
D: hope u get ur file back soon MONGCHAW
I'm on the same boat btw, the factory that is currently repairing my laptop got theft and my laptop's situation is now unknown
We'll be waiting for u to come back after that, Good luck