Beechwood timber : 4 and 6 rows of pure Tampico fibre . Tampico is a robust fibre from the yellow leaf of the agave cactus , which grows only in the highlands of northern Mexico . Tampico has great water retaining properties , is resistant and hard wearing and keeps it shape without softening. The fibre has tiny hooks on the shafts , which gives it a natural slightly abrasive quality Size : 9 x 4 cm