The Hillman Pull Toggle Bolt Anchors are fast-installing heavy duty hollow wall anchors. The toggle bolt design consists of the anchor head, a plastic strap and a sleeve nut. Pull Toggle anchors are adjustable and work in various hollow wall depths and materials including drywall, hollow block, plaster, and tile. They enable a wide variety of grip ranges and are ideal for use when the depth of the material is unknown. The toggle bolts hold up to 120 pounds (drywall) 620 pounds (block) for reliable heavy-duty use, while the self-piercing point eliminates the need for a pilot hole when used in drywall material. The Hillman 377604 comes with 12 Heavy Duty Toggle Anchors and Screws.