<p>This product locks on walls or ceilings 5/8-3/4" thick but also work if you hit a stud. It accepts # 6- #14 screws. You need only 5/16" drill and a screwdriver or screw gun. It holds up to 159 lbs. in 5/8" drywall with #8 screw. Use 1/4 of the ultimate load. It features a vibration-proof holding in 5/8"-3/4" walls. Anti-rotation fins prevent anchor spinning. You can use a screw gun to install and #8 screws are included. It works with a #6 - #14 screw. It also holds if hit unexpected stud or solid. It is great for blinds