The TOGGLER SnapSkru SP self-drilling drywall anchor installs into 3/8"- to 5/8"-thick drywall ceilings and walls without requiring a predrilled hole, includes #8 x 1-1/2" screws, and is made in USA. Its corrosion-resistant glass-filled nylon body installs into drywall with a Phillips driver, a hand drill, or a screw gun. The anchor's positive stop mechanism prevents the anchor from being driven too far into the drywall. Inserting an included screw activates the anchor's jaw, locking the anchor into place and compressing the drywall for a vibration- and shock-resistant hold. The jaws emit a noise when activated, providing audible confirmation that the anchor system has been installed successfully. If using screws other than those supplied, the anchor accepts #6 to #10 size sheet metal screws with a length equal to the thickness of the item being fastened plus 1-1/4".