From the publisher's website
The Armorsmiths at Creation's Edge Games have crafted something special for your fantasy campaign. Twenty-five something specials to be exact...
Buck-A-Batch: Magic Armor for 4th Edition Dungeons & Dragons features 25 unique new pieces of magic armor.
The items are presented in two formats for your convenience: Standard item template and a card format for cutting out and handing to your players.
This is not a translation of a 3rd edition product rather a completely new product for 4th edition rules.