An assortment of square-drive, round washer-head, black pocket screws from The Hillman Group. Pocket hole screws are used to join two wooden work pieces together. Included variants come in #7 and #8 screw sizes, and the full assortment features both fine and coarse-threaded variants. Full assortments of #45635 contain seven (7) refills comprised of Hillman item numbers #45636 - #45642.