From the publisher's website:
Brace yourselves! (Sorry.) Here's a way to put a little more muscle in those arms- or rather around them. The other kids will never make fun of your bracers again! (Sorry. Again.)
Buck-A-Batch: Magic Bracers for 4th Edition Dungeons & Dragons features 25 unique pairs of magic bracers.
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.