An assortment of one-way, round- and oval-head sheet metal screws from The Hillman Group. Sheet metal screws, or tapping screws, are highly versatile and are used to attach metal, wood, fiberglass, and plastic. Variants included in this assortment range in screw size from #7 to #12. Full assortments of #1551 contain sixteen (16) refillable items comprised of Hillman item numbers #1552 - #1567.