Shaving Brush Knot Diameter/Size
The Knot Diameter gives you an indication of the amount hair that has been packed into the handle. It is usually expressed in Millimetres (mm) and you’ll find that they vary from around 20mm to around 30mm in diameter. With 24mm being considered the average.
YAQI pack their knots just right resulting in just the right amount of "bump".
A brushes Diameter, in conjunction with it's Loft, give a brush it's backbone.