L.H. Dottie WallDriller® WDK8 #8 Zinc Alloy Anchor Kit with Pan Head Combo Drive Screws. The WDK8 contains #8 Zinc Anchors and #8 Phillips/Slotted Drive Sheet Metal Screws. The Wall Board Anchor is manufactured with a fine centered point that helps guide the anchor into the material. It features a unique sharp thread design that allows it to screw directly into drywall with no pre-drilling. It is also a reusable anchor that can be easily installed with a screwdriver or power driven screwdriver.