Metal wire picture hook $ 9.65 Features Precise suspension Through the unique positioning, the holes can be accurately marked, so that the photos can be hung in the first time; Working principle: Keep the two magnetic parts in the required position, insert the key into the hole marked by the single-tooth hook (or standard serrated hook and D-shaped hook). The built-in hook is used to locate the wire hook. Then insert the hook and frame into the marked hole. The included hardware protective cover contains convenient enough space to store more things.