Fischer Say:-
The RC4 Z13 is a 4-13 DIN Race Binding From Fischer
FRP
Four rollers and glide inserts optimise flexibility and release characteristics of the binding.
FREEFLEX PRO
Freely-suspended heel section permits unrestricted ski flexing for optimum ski control.
ABS
A virtually frictionless release of the ski boot from the binding guarantees the highest possible level of safety.
RACE DIAGONAL TOE
Diagonal Toe tuned for racing purposes. Due to its higher release force vertically (compared with horizontally), it holds up to the high backward lean forces in racing.