I have a 10mm long socket (50mm) and it will NOT reach 🤔, the only thing that I can think of is to enlarge the hole on the outside enough to be able to get something in to get a grip of the bolt etc. and turning it and then pull it out. and afterward's insert a rubber blanking grommet. 👍 Any suggestions would be really appreciated. Tony 😊
The socket we used had an overall length of 60mm, so it could just be that you need a slightly longer/deeper socket. Personally we wouldn't recommend making the hole bigger, it would need to be quite large to get something on the bolt.