The PX 18 ROCKERFLEX is an elite-level, competition race binding with a 10-18 indicator range . The new PX ROCKERFLEX features a smaller mounting zone and partially suspended heelpiece, allowing enhanced ski flex and control. The all-metal reinforced Pivot toepiece combined with the PX Racing heel delivers maximum power transmission, shock absorption, and the longest elastic travel on the market to reduce unwanted pre-release. The Rockerflex bridge neutralizes pressure between toe and heel, delivering the most natural ski flex. The PX 18 Rockerflex is designed for use with R21 WC (adult) plates only.