K2 Amp Strike Skis + Salomon Lithium 10 Bindings. The K2 Strike Skis are entry-level snow sliders for the beginner or casual skier who wants a quality pair of skis for the right price. K2 uses their tried and true torsion box construction with cap sidewalls, which is a durable long-lasting design that also reduces the overall ski weight. Catch-Free Rocker also makes skiing more fun by helping you initiate and finish turns. Enjoy your ski day with the easy-to-use, lightweight Strike Skis from K2. Catch-Free RockerT – This rocker profile is designed to aid developing skiers initiate smooth turns even at low speeds. A slightly elevated tip and tail allow skiers to carve at lower speeds without worrying about catching edges. This added confidence makes skiing more fun and helps skiers develop faster. Torsion Box – Torsion Box construction is the foundation for a wide range of skis designed by K2. Depending on the dimensions of the ski, and the amount of flex and torsion designed into it, one model of a Torsion Box ski can differ greatly from another. The versatility of the construction enables K2 to build everything from entry-level through expert skis with this method. Torsion Box skis share common traits of ease, forgiveness, responsiveness, and energy. Salomon Lithium 10 Bindings. Have an adjustable Din that can be adjusted to cover a din setting of 3.0 to 10.0 so you can adjust it as you progress as a skier and the boots size are easily. Adjustable to fit any boot from size 260 to 384mm.