I think it was in the euro's rules (or was and then took out for whatever reason...) that mallets couldn't be longer or bigger in circumference than 18cm (I think?). Anyways, whatever the circumference of the standard blue/yellow PE pipe we have here. It still allowed for a fairly long mallet head compared to what most use but nothing ridiculous.
I also just thought it made sense to use the same measurement for both dimensions.
I think it was in the euro's rules (or was and then took out for whatever reason...) that mallets couldn't be longer or bigger in circumference than 18cm (I think?). Anyways, whatever the circumference of the standard blue/yellow PE pipe we have here. It still allowed for a fairly long mallet head compared to what most use but nothing ridiculous.
I also just thought it made sense to use the same measurement for both dimensions.