Toggler Snaptoggle, 100 Pack, 1/4"-20", BB Toggle Bolt, For Hollow Walls, Replaces Old Fashioned Toggle Wings, Strong & Require A 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.