Purchase Big knots

[Arkwell]

Is there a place where you can purchase really big knots to make a brush in Pure or Best Badger? Knot size 30mm and up?

[takedeadaim]

Biggest I have seen is 28 in Silvertip from golden nib, nice not and a huge brush!

[TnutsShave]

thegoldennib.com has a 30 mm. I forget the grade...silvertip I believe.