The Rask disc made by new Swedish manufacturer Kastaplast is now PDGA Approved on 7-18-2013.
"Rask is a concept disc – a new take on aerodynamics! After two years of sketching, 3D printing, manual sculpting, aerodynamic simulations and field testing, Rask is ready for take off. It cuts through the air fast and efficiently thanks to its innovative drag reducing ridge at the bottom side of the flight plate. Flight characteristics: Stable." - by Kastaplast ([email protected])