Catalyst™ Polytip Bristle 6400 Brushes Style:Bright 12 Blended with hardener at the

Blended with hardener at the proper ratio

allowing it to easily fill holes and voids

these tools are also great for intricate carving

low expansion properties

Resistant to alkalies and weak acids

Catalyst™ Polytip Bristle 6400 Brushes Style:Bright 12 Blended with hardener at theCatalyst Polytip Bristle brushes are another Princeton breakthrough that advances the science of synthetic hair. This new series is super stiff yet still extremely responsive. Unlike natural hog bristle, Catalyst has real integrity in water. Natural bristle can be rendered useless when it is water soaked. The true advance in Catalyst is the Polytip feature. For the first time, the tip of each individual hair has been split to replicate the natural