Quote:
Originally Posted by Laird Scooby
https://www.ebay.co.uk/itm/383800748928
I wouldn't use a hole saw Luke, they tend to make the holes a little on the large side like a lot! 
Better with one of those above, plenty of UK sellers selling sets of 3 drills (4-12, 4-20 and 4-32mm) as well if you want the versatility of the set.
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Definitely.
I assumed they were a gimmick when I saw them, but they cut holes really nicely.