Looking to try out a couple different crampons in "cramp-o-matic" configuration. Looking for the following:

G12
G20 Plus
Duha

Not interested in any other models. If you have anything gently used and looking to sell, please let me know.  I can buy outright or trade a couple other lightweight crampons that I've got: Grivel G10 and Camp XLC Nanotech Semi Automatic.