I’ve put a set of those on my Ohana SK50WG, an otherwise very decent soprano which is disappointingly supplied with guitar-style tuners. No adjustment to the hole size was required, although when replacing guitar-style tuners the GraphTec ones don’t fit or cover all of the screw holes; not a problem if you’re replacing friction pegs, of course. They work beautifully and so far have lasted with no issues or signs of imminent failure.
Something worth looking out for is that the earlier version of these tuners apparently had a longer shaft, so it’s probably a good idea to check that you’re buying recent stock as the older model has a disappointingly high failure rate.