No pre-drilling in drywall, anchor self drills it's own hole. Optimized thread formation grips into drywall for a secure hold, installs faster than plastic anchors which require pre-drilling holes. Fewer rotations to seat flush, creates less drywall dust and sharp tip point for easy start. Easy to remove, simply unscrew the anchor from the wall. Fixture thickness not to exceed 1/4 In. with supplied screws.