A Toggle Bolt (aka Butterfly Anchor) Is A Fastener For Hanging Things On Hollow Walls Such As Drywall. Toggle Bolts Have Spring Loaded Wings That Open Inside A Hollow Wall， Bracing Against It To Hold The Fastener Securely As The Screw Is Tightened. The Wings， Once Fully Opened， Greatly Expand The Surface Area Making Contact With The Back Of The Hollow Wall Which Increases The Weight That Can Be Secured Compared To A Regular Bolt.
Spring loaded wing
Zinc plated
Sold in packs of 50
Contains toggle wing and screw
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