Sport Screw Classic Nordic BindingThe Sport Screw Classic is Rottefella's most lightweight and durable screw binding. The binding can be mounted to all flat classic skis without mounting plates and is available in classic and skate version. The binding is set with medium flex which easily can be replaced with harder or softer flex. The flex is a flexible pad which provides bending resistance. It helps you control the skis and gives you a more natural kick and return cycle. Binding