Go buy yourself a brake caliper pin punch set Peter normally two in a set 5.5mm and 6mm

or a triple set sizes 3 4 and 6mm

I take it the calipers do use a standard size pin?

At least they'll have the correct depth ability.

Mark - No Longer driving
Archie the Old English Sheep Mog...........
2010 Roadster 3.0 V6 (S3) wink