ZERO DEGREE i-DISC Shop NOW! The 0 degree i-disc (blue) creates 6 degrees of splay on the sidefins (existing 6 deg splay already inbuilt into the fin) and 0 degrees on the centre fins. The centre box should only ever contain a blue i-disc.

Furthermore each i-disc can rotate up to 5 degrees in . . . → Read More: i-Disc