An assortment of various sizes of eye bolts from Hillman. Eye bolts are a screw with a loop on one end and threads on the other end. They are traditionally used for tie-downs, securing cables, and hanging items with cordage. With dozens of non-traditional applications, eye bolts can even be used for framing and marine applications. Full assortments contain 67 refillable pieces. Full assortments of #511 contain eight (8) refills comprised of Hillman item numbers #512-519.