This is a simple handle for 8x3 magnet. It might be used to grip some small metal things, like screws or washers. The magnet should hold on without any glue, but you may add some. Better to print with a brim.

Sources: https://cad.onshape.com/documents/6e33e443d92deafdf74b672b/w/e104e2150318992c6d1a4d40/e/2088b4de8ccb11cf4ec222c8?renderMode=0&uiState=663d224257d277215f605e30