Brush Size Shape Bristle Width Bristle Length #0 Round 1/16" inch 3/8" inch #2 Round 5/32" inch 19/32" inch #4 Round 3/16" inch 25/32" inch #6 Round 5/16" inch 1" inch #8 Round 3/8" inch 1-3/16" inch #10 Round 7/16" inch 1-3/8" inch #12 Round 1/2" inch 1-9/16" inch #14 Round 9/16" inch 1-9/16" inch #16 Round 5/8" inch 1-21/32" inch #18 Round 11/16" inch 1-3/4" inch #20 Round 25/32" inch 1-31/32" inch #0 Bright 3/16" inch 1/4" inch #2 Bright 1/4" inch 3/8" inch #4 Bright 3/8" inch 1/2" inch #6 Bright 7/16" inch 5/8" inch #8 Bright 1/2" inch 11/16" inch #10 Bright 3/4" inch 15/16" inch #12 Bright 1" inch 1-3/16" inch #16 Bright 1-11/32" inch 1-7/16" inch #18 Bright 1-1/2" inch 1-21/32" inch #0 Filbert 3/16" inch 3/8" inch #2 Filbert 1/4" inch 15/32" inch #4 Filbert 3/8" inch 11/16" inch #6 Filbert 7/16" inch 25/32" inch #8 Filbert 1/2" inch 1" inch #10 Filbert 25/32" inch 1-3/16" inch #12 Filbert 1" inch 1-3/18" inch #16 Filbert 1-11/32" inch 1-9/16" inch #2x0 Flat 1/8" inch 3/8" inch #0 Flat 3/16" inch 15/32" inch Synthetic Brushes