Hinged Metal Furniture Anchor [1429]

Furniture can be dangerous in the home, should they tip or fall. We recommend securing these using specially-designed furniture anchors. Dreambaby® Hinged Metal Furniture Anchors help discreetly secure furniture in an upright position to the wall to help prevent accidental tipping.
Helps prevent tipping furniture by securing them to a wall
For use on bookcases, chests of drawers & display cabinets
A low-profile design means the anchors are barely noticeable when installed
Heavy-Duty adjustable metal cable Ideal for earthquake zones
For more information visit the website relevant to your country.
www.dream-baby.com
www.dreambaby.c...
www.dreambaby.c...

[@jordanliles]

The instructions don't say what size drill bit to use. All it does is show a screwdriver and a pencil with "1.25in" and "3mm." Might be helpful to comment with the drill bit size for people looking at this comment in the future.