towbar bicycle holder

My bicycle holder hang constant at a tiny nail. one time the bicycle holder almost drops down when i was replace the bicycle holder. So i decide to make a nice fitted one.

This is normally the standard size for a tow bar on a car. I make it a little bit smaller so that the bicycle holder nice fit. The streght of the part comes by the steel M8 thread that is inside the hanger. You need to have one anchor bolt like you see on the picture, or you can make with some chemical anchor a normal stee