Handcrafted in USA, this 100% Dupont Chinex extra firm blend paint brush is best for applying Lox VOC and High Viscosity paints. Great for interior and exterior painting. Formulated for use with all Benjamin Moore interior or exterior latex and oil-based paints, stains, and primers.Handcrafted in USA, this 100% Dupont Chinex extra firm blend paint brush is best for applying Lox VOC and High Viscosity paints. Great for interior and exterior painting. Formulated for use with all Benjamin Moore interior or exterior latex and oil-based paints, stains, and primers.