I'm not sure they just say all purpose brushes for use with most paints. There are a lot of different varieties in the package. Heres a break down of what they are which I should have done a description on them earlier: Gold Nylon: Wash 3/4 in. 1in,shader 2,10,round 0,3: white nylon: shader 4,6, Liner 0, round 3, angular shader 3/8 in, Natural Round 2,4,8, Wash 1/8in, 1/2in;Round 5/0, 6;bristle:Flat 2,4,6 Round 3,Chip brush:1in, 2-foam Brush: 1in. Total 25 Brushes. I hope that helps I wrote exactly how it is on package. Good luck and Ty