This is the Non-Drive Side Dropout that fits 2009 and newer Damocles, 2008 Noah, and Asteria frames. It's made of aluminum and is CNC machined to join perfectly with the alloy stay tips that are bonded into the ends of the frame tubes on the back of the bike. This Damocles 09+/Noah 08/Asteria Non-Drive Side Dropout comes with hardware to fasten it onto your frame.