![Sad :(](./images/smilies/icon_sad.gif)
![Crying :cry:](./images/smilies/cry.gif)
Although not the only point they can break, the usual problem is that the small prong that holds the roller fitment snaps off:
![Image](https://i.postimg.cc/Vk2CfHTZ/20210914-082347.jpg)
Having seen mention of repairing these in a number of places, and given that these arms are simply a convenience and not an integral part of the seatbelt (which in my view should never be repaired) I thought I'd give it a go and do a "How To" at the same time.
Usually when these prongs snap off it isn't a clean break, meaning you can easily see exactly what angle they need to go back on.
Take a blunt ended (ie not self-tapping screw) and cut it to about 1 cm length - I used a screw designed for fixing a household socket to its back-box, because it is a good width and has a fine thread, meaning it should get a good grip. You can see it on the bench in the above photo - discard the part with the head on it.
Then carefully put a blob of paint in the centre of the broken end of the prong and gently press it into position against the rest of the arm - that will give you a location mark for drilling:
![Image](https://i.postimg.cc/G2FYSJX7/20210914-082452.jpg)
![Image](https://i.postimg.cc/288v2WhG/20210914-082533.jpg)
I used some red acrylic modelling paint but anything that isn't instantly dry would do...