FIL is a toe bail system. It allows any type of Petzl crampon to be used with shoes with toe welts. It is sold in pairs, to equip a pair of crampons.
FIL SMALL is a toe bail. It allows any type of Petzl crampon to be used on narrow boots with toe welts. It is sold in pairs, to equip a pair of crampons.
FIL TELEMARK is a toe bail. It allows any type of Petzl crampon to be used on telemark boots. It is sold in pairs, to equip a pair of crampons.