Understanding Brush Size for Cutting-In

Give you a few little cutting tips. So, using a 2 and 1/2 inch angled sash brush. I typically like a 3-inch. You can cut in farther cuz you can hold more paint. And so, a big The bigger brush you can handle the better. Like I definitely prefer a 3-inch. Also, the this brush I only have two brushes. I had to wash this brush after using it