This is a mount for an Apple iPhone Magsafe charger to attach to a round post from a monitor stand.

This is the monitor stand I have, although you could adjust the mount end of the model for whatever you are trying to mount to.

I prefer to design my parts to print quickly and with little or no supports, so the arm of the mount is split into 3 parts. Everything can be assembled with M4 screws and nuts.

I am using a 3rd party charger, but the dimensions are the same as the official Apple Magsafe charger.