how to you repair endershield

[xx251000]

i have one and i dont know how to repair it

[Dash16]

If it has enchantments, it can be repaired at an enchanting table. If you have an uncrafting table, you can repair it there as well. http://wiki.technicpack.net/Uncrafting_Table

You might even be able to repair it on an Anvil with Ender Pearls, but I haven't confirmed that one.