WallBuddies
Wallbuddies are an easy solution for hanging your timber picture frames. Wallbuddies are attached to the top two corners of the frame, which is then hung onto the 2 included hooks. The angled sawtooth design means the picture hooks do not need to be exactly parallel for the frame to sit straight on the wall. This also means once you have the frame set level, you will never have to straighten the frame again.
Available in 2 sizes: small is rated to 13kg and large is rated to 35kg.
For frames over 30kg's Bear Claw Hangers are recommended.
https://papakuraframers.co.nz/products/hangman-bearclaw-hanger