Toggler Snaptoggle, 10 Pack, 1/4"-20", BB Hollow Wall Anchors, 1/2" Head Bolts, Replaces Old Fashioned Toggle Wings, Strongest & Require The Smallest Hole, Can Be Pre-Installed Without Using A Bolt & Won"t Fall Behind The Wall When The Bolt Is Removed, Solid Metal Channel Centers The Bolt Which Cannot Sag, Will Not Damage Or Break Through The Wall Even Under Vibration.