UKC

The Radion is our most advanced ice screw. A unique hanger rotates independently on the shaft, ensuring the force of a fall is applied at the optimal angle. The Radion features a reverse angle on the threads (flat side towards the ice), to distribute pressure more uniformly in brittle ice.

Read more at http://www.ukclimbing.com/gear/news.php?id=3301

In reply to UKC Gear:

New unique idea I don't think!!
The Russian titanium ice screws that everyone used a couple of decades ago used a very similar hanger and handle and Grivel now has it's own version...

In reply to UKC Gear: Not to mention they aren't all that good

In reply to Hannes:

These Cassin-made screws look familiar...

http://www.auvieuxcampeur.fr/nos-produits/materiel-de-montagne-d-escalade-e...