ITTF Friction Tests ITTF Friction Force Results Below 25mN Super Special Super Special Extra FAIL Above 25mN Magic Pips Panther Half Long Frustration Super Nova Super Defence PASS All rubbers above 25mN will still be ITTF approved after 30th June 2008 Friction Special - differences in the friction force over the rubber were seen, some areas were above 25mN and some below 25mN. This rubber will be tested again and the results reported when known.