Discraft says this about the Focus: Discraft Stability Rating: D-Line 0.5
The 2009 Ace Race proto is now the versatile Focus. This bullet-nosed brute fills a gap in Discraft's putter line up, being our only 0.5 putter. Focus will cut moderate winds on long approaches, and delivers pinpoint accuracy all the way to the chains.
About Jawbreaker Plastic
Jawbreaker plastic was developed to be the finest plastic blend available for putt and approach discs. Super tacky - give 'em a squeak! Unique jawbreaker marbling. Advanced polymers provide good durability. Discs have a medium stiffness.