Hi @sisimon510, You're correct that a small grubscrew would typically lock the holder onto the wall bracket. If there is no screw, then it might be so ...

Welcome to the Bunnings Workshop community @sisimon510. It's wonderful to have you join us, and many thanks for your question about filling a hole. ...

The expansion it does is to combat the shrinkage experienced with cement products @Dave-1. So, as you mentioned, it doesn't expand out further than th ...

Good afternoon @sisimon510 Just posted my patio repair. It shows how I used concretemate. Its probarly what i would use in your situation. Id just go ...

Good morning @sisimon510 and @MitchellMc lol I saw the hole and my brain went "I know what I could use!" and yep its the expanding concrete MitchellMC ...