The long bar crampon: A new extension bar which is longer than the standard one (190 mm) and allows you to switch rapidly from a large size to a smaller size, by simply turning it over. By pressing on the crampon, the retaining tooth automatically reduces the size, ensuring a rapid adjustment without using tools. Please remember that the right hand bar now becomes the left, and vice versa Suitable for Grivel crampons for increasing their size and also to accommodate large sizes