PMW DR2010 Disc / QR Dropouts
Paragon Machineworks DR2010 Dropouts:
These were unfortunately discontinued and are hard to find. These have a great style to them, and would make for a very cool choice on a wide variety of frame types.
Built in ISO disc brake mount
For use with quick release axles, with geared drivetrains
Integrated derailleur hanger
Machined from 4130 steel by Paragon Machineworks in California.