The 4 Combo Slim is the latest addition to the Liberty Combo Slim range. This nail is a great option for 5/16" shoes in smaller sizes (000, 00, 0) where the hoof doesn't need the length of the 5 Combo Slim or a 5 City but requires a head to fit the same crease. The head is only slightly smaller than the 5 Combo Slim and the nail length of 48.5 mm is between a 5 Race and 5 City.