The TePe brushes I use for many years. They are very well used by designing ago. Absolute negative is the durability of the wires. Over the years, the bending strength of the material was getting worse. Meanwhile, break the wires after a few days use. One can get the impression that the poorer wire quality, a more elaborate packaging, which nobody needs and less brushes per pack a targeted rip strategy follow. I started to look around for better competitors.
