Insert for 1x3 bins  [https://www.printables.com/model/704083-gridfinity-re-refined-parametric-bins-with-labelsl](https://www.printables.com/model/704083-gridfinity-re-refined-parametric-bins-with-labelsl)

It can hold 3 or 4 router bits.  Support for 6mm, 8mm and 1/4in shaft.

For a 4 bit holder:

2 of Lid_1_4

4 of X1_4

And 4 insert of the desired inserts.

Put the inserts into the rings.

Insert the rings with the rounded in the corner of the bin. (see picture)

Put the two lids with the rounded corners towards the corner of the bin.

Tip. you can use the slicer to put text on the lids