Pallo Coffee Tool Grouphead Brush - Denim Coffee Company
Pallo has made a very handy tool for home espresso enthusiasts and professional baristas.  
We recommend these brushes anyone with an espresso machine because cleaning is essential for maintenance and for making good coffee.  This tool makes all of that very easy, so we find that baristas are able to clean more frequently and with less time.  If you have an espresso machine, just trust us and grab one.  

Find the replaceable brush heads here: