Bruder JCB 4CX 02428 - Loader boom connector
The clips that come with the toy snapped off so I made and improvised these.
I removed the boom/ arm and cut/ filed an remains of the old clip away to leave a flush surface which I could drill at 4mm hole into.
The parts push and clip into the 4mm hole and then clip over the original mounts.
Three parts included - large diameter, small diameter and test fit piece.
Clean the test fit piece with a 4mm drill to test the fit of the main parts.
Small diameter is on the left (as you look at the toy from the front).