Toggle bolts are a hollow wall anchoring device specifically used in block, drywall, and other hollow materials. The anchor has a dual wing spread that opens automatically with an internal spring. Once the anchor is pushed through and tightened, the wing is calibrated to sit flush against the backside of the wall. This provides even weight distribution and prevents pull out. Drill required hole through the material. Insert bolt through fixture and attach wing. Fold wings completely back and insert through hole. Push through until wings are released and then pull back so that wings sit flush with the back of the material. Tighten bolt until firmly in place.