Go to home depot and get some 3/4" wide flat stock and drill holes for 5mm bolts at the right spacing for the retainer holes. This is a quick, cheap and effective bearing removal tool. It is kinda like the garbage adjustable pin wrench tools they sell
When in doubt how far to drill for the retainer, drill a little extra. If you drill too little of the 4 punch marks it will hang up and be hard to remove. Drilling a little extra isn't a big deal as there is plenty there to work with