
Originally Posted by
altshaver
In one of the examples you gave, the 4292/6 brush in particular, the number 4292 denotes the model number of the shaving brush, while the number 6 indicates the size of the shaving brush of the given model number. A size 6 is quite large for a Thäter brush. The given specifications of the Thäter brushes can be deceiving, too. A rule of thumb has been to add 2mm to the given knot diameters of Thäter shaving brushes. This discrepancy has been thought to be due to the manufacturer giving the knot diameters of the brushes at the bottom of the badger knots, instead of the typical measurements at the "necks" of the shaving brush handles. If you are still confused, I would recommend you email the manufacturer.