Uses

If you're painting walls you'll use a paintbrush primarily for cutting in. Pros sometimes use 3- or

4-inch-wide brushes for this, but we think a 2-1/2- inch-wide brush is ideal for most DIYers.

Material

Bristles may be natural or synthetic. If the  filaments  are synthetic, they may be made

of polyester, nylon or a blend of nylon and polyester. Filaments can be hollow or solid and can

be tapered or untapered.