This Set Of 5 Hog Bristle Brushes Is Suitable For Oil Colour, Acrylic Colour And Gouache. The Set Contains The Following Types And Sizes: Round Brush In Size 6, 2 Cat Tongue Brushes In Sizes 10 And 14, 2 Flat Brushes In Sizes 10 And 14. Hog Bristle (Also Called Bristle) Is A Sturdy Type Of Hair Used For Thicker Paints, Such As Oil And Acrylic Colours. The Hair Is Strong And Resilient And Leaves A Visible Brush Stroke In The Paint.