Self-tapping Screws in Various Sizes, Suitable for Attaching Wood, Deck, and Timber Made of C1022, zinc plated Applications: woods, decks, fences, residential, and outdoor projectsMade of C1022 materialAvailable in various sizesSpecial function: for attaching wood, deck, and timberExtra enhancement: plating can be yellow zinc, black/gray phosphate, nickel, and brass